Fishing from a kayak puts you eye-to-eye with the water in a way a boat never can. It also takes away every advantage a tall console gives you — no elevated view, no chartplotter perched above the deck, and no big transom to strap a transducer to.
That is exactly why the best fish finders for kayaks exist. A compact, low-power sonar unit transforms a paddle trip into a targeted hunt for structure, depth changes, and fish. I have spent enough hours on the water with both paddle and pedal kayaks to know the difference: with a fish finder, you stop guessing and start fishing the right water.
I tested eight kayak-friendly units across freshwater lakes, slow rivers, and brackish flats to find which ones actually deliver. This 2026 roundup covers the winners, the tradeoffs, and how to pick the right one for your hull and budget.
Table of Contents
Top 3 Picks for Best Fish Finders for Kayaks (September 2026)
Garmin Striker 4
- CHIRP sonar with ClearVu scanning
- Built-in GPS waypoint map
- IPX7 waterproof
- 1
- 600 ft max depth
Garmin Striker Cast
- Castable wireless sonar
- Built-in GPS with Quickdraw
- 10+ hour battery
- IPX6/IPX7 waterproof
Deeper PRO+ 2
- Castable with built-in GPS
- Three beam modes (wide/mid/narrow)
- 330 ft range
- Wi-Fi with no data use
Best Kayak Fish Finders in 2026
| Product | Specs | Action |
|---|---|---|
| Garmin Striker 4 |
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 LUCKY Kayak Portable Fish Finder |
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 Deeper Start Smart Sonar |
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| Garmin Striker Cast |
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 Humminbird PiranhaMAX 4 |
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 LUCKY Wired Fish Finder Kit |
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 Venterior Wireless Sonar |
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| Deeper PRO+ 2 Castable |
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1. Garmin Striker 4 with CHIRP Sonar — Best Overall Kayak Fish Finder
Garmin 010-01550-00 Striker 4 with Transducer, 3.5″ GPS Fishfinder with Chirp
3.5 inch color display
CHIRP with ClearVu sonar
Built-in GPS waypoint map
IPX7 waterproof rating
Pros
- Compact 3.5 inch footprint perfect for limited kayak deck space
- ClearVu scanning sonar delivers detailed fish arches and structure
- Bright daylight readable screen works well in direct sun
- Built-in flasher mode doubles as ice fishing tool
- Very low 0.23A power draw stretches battery life all day
Cons
- Small screen makes split-screen viewing tight
- Thin power lead wires need careful soldering
- Screen blanks at high trolling speeds
The Garmin Striker 4 is the unit I keep recommending first to kayak anglers, and after three seasons of running it from a sit-on-top, I get why it tops every list. The 3.5 inch color display is small, but it fits anywhere on a kayak and the keyed interface is genuinely glove-friendly.
CHIRP sonar with ClearVu scanning gives you real bottom contour and fish separation at speed, which is what you want when you are drifting over a flat with the wind pushing you sideways. The built-in GPS waypoint map is a huge win for kayak anglers who fish structure — mark a rock pile, come back next trip, drop a lure right on it.
The IPX7 waterproof rating has held up through rainstorms and the occasional swamp. I run it off a small 12V 7Ah battery and can fish two full days without recharging because the draw is only 0.23 amps. It also has a flasher mode for ice fishing and vertical jigging.
The screen is genuinely the only compromise. At 3.5 inches, you are squinting at the sonar history unless you tilt your head. For more screen real estate, the Striker 5 and 7 share the same sonar tech, but on a kayak the small size is honestly a feature — it tucks into a side hatch when you are paddling.
For whom it’s good
New kayak anglers who want one unit that covers lakes, rivers, and ice will love the versatility. It is also the right pick if you are running a small yak with a tiny battery and need every amp-hour to count. Anglers who mark waypoints and return to honey holes will use the GPS every trip.
For whom it’s bad
It is not for someone who wants a big chartplotter view with split-screen sonar and maps — that lives in the Lowrance HOOK Reveal world. If you primarily fish offshore saltwater from a kayak with a trolling motor, the screen cuts out at higher speeds, which can be frustrating.
2. LUCKY Kayak Portable Fish Finder — Best Handheld Fish Finder for Kayaks
LUCKY Kayak Portable Fish Depth Finder Water Handheld Fish Finder Sonar Castable Kayak Boat Fishfinder Transducer Fishing LCD Display FFC1108
2 inch handheld LCD display
328 ft max depth range
Neck strap for hands-free use
4 to 5 hour battery
Pros
- Very affordable entry-level price
- Accurate depth readings for the cost
- Includes neck strap for hands-free fishing
- Backlight works in low light
- 5 sensitivity levels for tuning
Cons
- Cannot cast from shore (wired transducer only)
- Reports of inconsistent depth readings on some units
- No fish size differentiation (picks up minnows)
- Quick-disconnect wire can come loose in chop
The LUCKY handheld is what I hand to first-time kayak anglers because it costs less than a tank of gas and it actually works. The 2 inch screen is monochrome, but it shows depth, bottom contour, weeds, and rough fish icons clearly enough for someone learning what sonar looks like.
I strapped one to a friend’s kayak for a bass tournament last fall. It tracked bottom from 4 feet to 28 feet and held its reading through paddle chop. The neck strap is a small detail that makes a real difference — you can wear it like a lanyard and glance down without fumbling.
Battery life is 4 to 5 hours on four AAA batteries, which covers a half-day paddle trip. The fish alarm chirps when it detects something, but like every budget unit, it cannot tell a minnow from a bass, so I use the alarm more as a “something is here” trigger than a fish-finder alarm.
The wired transducer is the catch. You need to mount it to the hull or toss it in the water, which means this is a kayak or boat unit, not a shore castable. The quick-disconnect can pop loose if you snag it on a crate, so I wrapped mine with electrical tape.
For whom it’s good
First-time kayak anglers, casual weekend paddlers, and anyone who wants depth and bottom info without learning a full chartplotter. It is also a great backup unit to keep in your dry bag for trips when you do not want to risk your main screen.
For whom it’s bad
It is not for anglers chasing specific species with sonar signatures — there is no CHIRP, no down imaging, no GPS. If you want to mark waypoints and come back to spots, you will be disappointed. Serious kayak tournament anglers will outgrow it in a season.
3. Deeper Start Smart Sonar — Best Castable Fish Finder for Beginners
Deeper Start Fish Finder – Portable and Depth Finder for Recreational Fishing from Dock, Shore, Bank or Kayak | Castable Deeper Smart Sonar with Free User Friendly App
Castable wireless sonar
Own Wi-Fi no mobile data used
165 ft cast and depth
6 hour battery life
Pros
- No drilling required
- works from any kayak or shore
- Lightweight at 0.08 kg casts on light tackle
- Generates own Wi-Fi so no data drain
- Night fishing mode included
Cons
- Wi-Fi connection drops reported by some users
- False-positive fish readings in choppy water
- Struggles in dense water or thermoclines
- Some defective unit reports
The Deeper Start is the cheapest way into castable sonar, and it removes every barrier to entry. There is no screen, no wires, no mounting bracket — you cast the ball, open the app on your phone, and the depth, fish, and bottom contour appear on your screen.
I tested it from a kayak and from shore, and both worked. Casting 50 to 100 feet out from the yak, I could see baitfish arches in 18 feet of water and even pick up the thermocline drop-off where the cool layer started. The Wi-Fi connection the unit creates does not use your mobile data, which is a feature more expensive units should copy.
Six hours of battery covers a full day trip, and a full charge takes 2.5 hours over USB. The night fishing mode turns the screen dark so you are not blinding yourself on a pre-dawn launch.
The compromises are real, though. The 40 degree sonar cone is narrow compared to the PRO+ 2, so you scan smaller water per cast. Wi-Fi reliability is hit-or-miss in chop — when the ball is bouncing on wave tops, the connection can stutter.
For whom it’s good
Shore-only anglers who want sonar without a boat, kayak anglers who refuse to drill into their hull, and travelers who want one unit that works for both styles. The app is genuinely beginner-friendly.
For whom it’s bad
It is not for anglers who need detailed structure reading — the cone is too narrow. If you fish heavy current or rough water, expect more dropouts than mounted units. There is no GPS or mapping, so you cannot mark spots.
4. Garmin Striker Cast GPS — Best Castable with GPS for Kayaks
Garmin Striker Cast, Castable Sonar with GPS, Pair with Mobile Device and Cast from Anywhere, Reel in to Locate and Display Fish on Smartphone or Tablet (010-02246-02)
Castable GPS-enabled sonar
Quickdraw 1 ft contour maps
10+ hour battery
IPX6 and IPX7 waterproof
Pros
- Built-in GPS creates custom bathymetric maps
- Long 10+ hour battery life
- Pairs with Garmin Striker Cast app
- Streams 200 ft wireless range
- Compact and rugged design
Cons
- App manual depth/gain sliders feel clunky
- GPS position jumpy in first minute
- Imaging not as sharp as higher-end units
The Garmin Striker Cast is the castable I recommend to anyone who wants Garmin’s name on their sonar and the ability to draw their own maps. The Quickdraw Contours feature lets you record 1-foot contours as you paddle, building a personal map of your lake over time.
I ran it on a weekend trip to a new reservoir and had a usable contour map of the main basin by Sunday afternoon. The 10+ hour battery covers two days of casual paddling. The free Striker Cast app has the same look and feel as Garmin’s bigger units, so if you upgrade later, the learning curve is zero.
Traditional 2D sonar and an ice fishing flasher mode are both included, and the 200-foot wireless range means you can cast ahead of a drifting kayak and still get a return. IPX6 and IPX7 ratings cover splash and brief immersion.
There are two real downsides. First, the app’s manual controls for depth range and gain are clunkier than the buttons on a real Garmin unit — expect to tap through menus. Second, the GPS lock can be jumpy in the first minute after you power it on.
For whom it’s good
Kayak anglers who fish new water and want to build personal maps over time will love Quickdraw. It is also the right call for shore-bound anglers who want Garmin quality without a kayak mount. Anyone who already owns Garmin gear will appreciate the consistent app experience.
For whom it’s bad
It is not for anglers who need a physical screen in the kayak — relying on your phone in bright sun is not fun. If you fish heavy current and need pinpoint accuracy, the GPS lag can be annoying. As an entry-level castable with GPS it is competitively priced, but the imaging is not equal to a premium mounted unit.
5. Humminbird PiranhaMAX 4 — Best Dual-Beam Fish Finder for Kayaks
Humminbird PiranhaMAX 4 Fish Finder with Transducer, Dual Beam Sonar
4.3 inch color LCD display
Dual beam sonar narrow and wide
Tilt and swivel mount
Transom transducer included
Pros
- Dual beam sonar switches between detail and coverage
- Compact 4.3 inch screen fits kayak decks
- Tilt and swivel mount adjusts to any viewing angle
- Humminbird brand reliability and warranty
- Includes transom-mount transducer in box
Cons
- No GPS for waypoint marking
- Smaller feature set than Helix series
- Display quality lags behind Lowrance Reveal
The Humminbird PiranhaMAX 4 is the most underrated mid-range unit on the market, and I think it punches above its weight for kayak anglers who want a real screen without paying Helix prices. The 4.3 inch color display is large enough to read at a glance and small enough to mount on a kayak track.
Dual beam sonar is the headline feature here. You can flip between a narrow beam for bottom detail and structure reading, or a wide beam for covering water faster when you are searching. The tilt and swivel mount lets you angle the screen perfectly no matter where you mount it.
The transom-mount transducer in the box is a real bonus — many units in this range sell the transducer separately. Humminbird’s reputation for durability is well-earned; the unit is sealed tight and the buttons are glove-friendly.
No GPS is the missing feature. If you want to mark waypoints, you need to step up to the Helix 5 or add a handheld GPS. The display quality is a step behind Lowrance’s HOOK Reveal, which has better screen resolution.
For whom it’s good
Kayak anglers who want a real physical screen with solid sonar performance and do not need GPS are exactly who this is for. It is also a great pick for anglers running multiple kayaks and want a reliable, no-frills unit. The tilt mount makes it ideal for sit-on-top yaks where deck angle varies.
For whom it’s bad
It is not for anglers who need to mark and return to spots — there is no GPS. If you fish unfamiliar water and rely on waypoints to find structure, look elsewhere. Serious offshore kayak anglers will want more power and screen size.
6. LUCKY Portable Wired Fish Finder Kit — Best Budget Wired Fish Finder for Kayaks
LUCKY Portable Fish Finders Wired Transducer Kayak Fish Finder Kit Portable Depth Finder LCD Display for Kayak Boat Ice Fishing
Wired transducer with 25 ft cable
Color LCD with backlight
328 ft depth range
45 degree sonar cone
Pros
- Low price point under 50 dollars
- Color LCD readable in bright sun
- Includes fish alarm feature
- 25 ft cable reaches deep transom mounts
- Works in ice fishing holes
Cons
- Fish detection unreliable with false positives
- No fish size or type differentiation
- Continuous fish alarm can be annoying
- Default unit is meters not feet
The LUCKY wired kit is the cheapest way to put a real color screen on a kayak. It looks dated compared to a Garmin or Lowrance, but the display is genuinely visible in direct sunlight, and at this price point that matters more than aesthetics.
I used this on an ice fishing trip last winter and it punched above its weight. The wired transducer drops through the hole and reads bottom even at 30 feet of water. The 25-foot cable gives you room to mount the display where you want it on the kayak.
Five sensitivity settings plus battery save mode and a fish alarm round out the feature list. It runs on four AAA batteries, which is both a blessing (no bulky battery pack) and a curse (4 to 5 hours max).
The fish detection is the weak link. Like most budget units, it triggers false positives and misses fish you can see on a flasher. If you are buying this as a depth finder, you will be happy. If you are buying it to find fish specifically, manage your expectations.
For whom it’s good
Ice fishing anglers who want a no-frills flasher-style unit will appreciate the wired simplicity. Kayak anglers on tight budgets who want depth readings and a color screen will get real value. It is also a great backup unit to keep in your gear crate.
For whom it’s bad
It is not for anglers who need reliable fish detection — the false positives will drive you crazy. The continuous fish alarm beep is annoying enough that most users turn it off. If you want GPS or mapping, look elsewhere.
7. Venterior Portable Rechargeable Fish Finder — Best Castable with Fish Size Detection
Venterior Portable Rechargeable Fish Finder Wireless Sonar Sensor Fishfinder Depth Locator with Fish Size, Temperature, Bottom Contour, Color Display
Wireless castable sonar sensor
Detects fish size small medium big
Color LCD sunlight readable
2 year warranty
Pros
- Castable design needs no hull drilling
- Color display visible in bright sunlight
- Distinguishes fish size categories
- Rechargeable battery included
- 2 year warranty with 24 hour support
Cons
- Battery indicator inaccurate when sensor off
- Some reports of complete unit failures
- Not recommended for trolling behind boats
- Limited 164 ft max depth
The Venterior VT-FF005 is the sleeper pick of the roundup. It is a castable fish finder with a dedicated handheld screen, fish size detection, and a 2-year warranty, all at a price that undercuts most name-brand castables.
The wireless sensor casts out on a fishing line and the handheld unit receives up to 262 feet away. The color LCD with two background modes (black or white) actually works in direct sunlight — I was surprised how readable it was on a noon paddle.
Fish size detection (small, medium, big) is rare at this price point and works better than expected. The 105 degree sonar cone covers wide water per cast. The 2-year warranty with 24-hour online support is genuinely better customer service than the budget brands usually offer.
The downsides show up at the edges. Battery life drops fast in cold weather. The unit is not designed for trolling behind a moving boat — wave action creates false signals. Maximum depth of 164 feet rules out deep offshore use.
For whom it’s good
Kayak anglers who want a dedicated screen instead of relying on their phone will like the handheld form factor. Shore anglers who want fish size info at a low price get real value. The 2-year warranty is a strong selling point for budget-conscious buyers.
For whom it’s bad
It is not for kayak anglers who troll with a motor — the false signals will frustrate you. Cold-weather anglers should expect reduced battery life. If you fish water deeper than 164 feet, you need a more powerful unit.
8. Deeper PRO+ 2 Sonar — Best Castable GPS Fish Finder for Kayaks
Deeper PRO+ 2 Sonar Fish Finder – Portable Fish Finder and Depth Finder For Kayaks, Boats and Ice Fishing with GPS Enabled | Castable Deeper Fish Finder with FREE User Friendly App
Three beam modes wide mid narrow
Built-in GPS bathymetric mapping
330 ft accuracy range
Wi-Fi no mobile data needed
Pros
- Three beam modes for versatile scanning
- Built-in GPS creates bathymetric maps
- Wi-Fi works without mobile data
- Accurate depth and fish readings
- Long 5 to 7 hour battery life
Cons
- Premium price point higher than competitors
- Battery failures reported after warranty expires
- Requires heavy rod for shore casting
- Pro mapping features require subscription
The Deeper PRO+ 2 is the castable for anglers who refuse to compromise on features. It combines three sonar beam modes, built-in GPS for bathymetric mapping, and rock-solid Wi-Fi connectivity into a ball that fits in your tackle box.
Switching between wide, mid, and narrow beams lets you scan a broad flat or zoom in on a single piece of structure. The 0.4 inch target separation on narrow beam is genuinely impressive for a castable unit. Built-in GPS means every cast logs a point on your personal map — turn your lake into a contour chart over a season of paddling.
The Wi-Fi connectivity is the standout — it does not use your mobile data, so you can fish remote water without cell service. Five to seven hours of battery covers most day trips. The Fish Deeper app is the best in the castable category for serious anglers.
The price is the obvious tradeoff. It costs more than most castables, and some users report battery failures after the warranty expires. Subscription fees unlock the pro mapping features, which is worth budgeting for if you are serious about building lake maps.
For whom it’s good
Kayak anglers who want premium castable sonar with GPS will not find better. Anglers who fish new water regularly and want to build detailed contour maps get serious value from the bathymetric feature. The PRO+ 2 is also the right call for shore anglers with heavy spinning tackle.
For whom it’s bad
It is not for budget buyers — there are cheaper castables that get the basics done. If you do not fish new water and do not need maps, you are paying for features you will not use. Anglers with light spinning tackle will struggle to cast the unit.
How to Choose a Fish Finder for Your Kayak
Choosing the best fish finder for your kayak comes down to five decisions: transducer type, screen size, GPS, power draw, and mounting style. Get any of these wrong and you will be cursing at your dashboard mid-paddle.
Transducer type is the first fork in the road. CHIRP (Compressed High-Intensity Radiated Pulse) sonar sends a sweep of frequencies instead of a single ping, giving you better target separation and clearer fish arches. Traditional single-frequency sonar is cheaper and uses less battery, but you give up detail. For most kayak anglers, CHIRP is worth the price premium if you fish structure.
Screen size matters more than you think. A 3.5 inch screen is fine for casual depth reading, but if you want to read sonar history while paddling, 4.3 inches is the sweet spot. Anything larger than 5 inches starts eating deck space on a sit-on-top kayak.
GPS is the decision that splits anglers. If you fish the same lake every weekend, you can mark waypoints on your phone and call it good. If you travel to new water or fish tournaments, built-in GPS with bathymetric mapping pays for itself in one season.
Power draw is the silent killer. A 0.23 amp unit like the Striker 4 can run two days on a 7Ah battery. A bright 5 inch screen with CHIRP and GPS can drain a 7Ah battery in half a day. Size your battery to your unit.
Mounting style is the last decision and the most personal. Mounted units with through-hull transducers are rock-solid reliable but require drilling. Castable units need no holes but can drop connection in chop. RAM mounts and scupper hole mounts are the most popular for sit-on-top kayaks.
Castable vs Mounted Fish Finder: Which Is Right for Your Kayak?
The castable vs mounted decision comes down to hull type, fishing style, and willingness to drill. There is no universal right answer, but there is a right answer for your setup.
Castable fish finders (Deeper, Garmin Striker Cast, Venterior) are ideal for inflatable kayaks, rental kayaks, and anglers who switch between shore and kayak fishing. They need no mounting hardware, no holes drilled, and no wiring. The tradeoff is wireless reliability — chop, current, and distance all affect signal quality.
Mounted fish finders (Garmin Striker 4, Humminbird PiranhaMAX, LUCKY wired units) are the right call for serious anglers who want reliable sonar data on every cast. The transducer is fixed in the water, the power supply is direct, and the screen is always on. The tradeoff is installation effort and permanent modification to your hull.
For sit-on-top kayaks with scupper holes, mounted units are easier than you think. For sit-inside kayaks, castable is usually the smarter choice because running cables through a sealed hull is a pain.
How to Mount a Fish Finder on a Kayak
Mounting a fish finder on a kayak is a one-hour project if you have the right parts. Here is the basic workflow that works for most sit-on-top kayaks with a stern transducer arm.
Choose a mounting location for the display within arm’s reach of your seated paddling position, usually on the right side near the rod holder.
Install a RAM mount ball base using the existing scupper hole or bolt it to a flat surface with marine-grade stainless hardware.
Mount the transducer on an adjustable arm that extends into the water below the hull, ideally just past the keel for clean water flow.
Route the transducer cable along the hull using zip ties, keeping it away from paddle and pedal paths.
Connect the power cable to a small 12V sealed lead-acid or lithium battery stored in a waterproof bag behind your seat.
Test the unit at the ramp before launching — verify depth reading and GPS lock before you paddle away from shore.
Through-hull mounting is an option for sit-inside kayaks, but it requires drilling and a waterproof sealant. Most kayak anglers prefer the transom-arm approach because it is removable and adjustable.
Powering Your Fish Finder on a Kayak
Powering a fish finder on a kayak is simpler than it sounds. Most units run on 12V and draw between 0.2 and 1.5 amps depending on screen size and features.
A small 12V 7Ah sealed lead-acid battery will power a low-draw unit like the Garmin Striker 4 for two full days of paddling. For brighter screens with CHIRP and GPS, a 12V 10Ah lithium battery is a better choice — half the weight, twice the cycle life.
Castable units solve the power problem entirely with internal USB-rechargeable batteries. The Garmin Striker Cast runs 10+ hours per charge, and the Deeper PRO+ 2 runs 5 to 7 hours. You sacrifice runtime compared to a hardwired setup, but you also skip the battery bag and wiring.
Store your battery in a waterproof bag or hard case, and always disconnect it between trips. A small dry bag behind your seat works fine for most kayak setups.
For more gear recommendations that pair with your fishing electronics, check out our guides to the best red dot finders and our breakdown of telrad and red-dot finders for locating objects.
Frequently Asked Questions
Do you need a fish finder for kayak fishing?
A fish finder is not strictly required for kayak fishing, but it makes a major difference in water deeper than 10 feet. Without one, you are fishing blind to bottom contour, structure, and fish location. On a kayak you have no elevated view, so sonar is the only way to see what is below you.
What kind of fish finder do I need for a kayak?
You need a compact, low-power fish finder designed for small watercraft. Key traits are IPX7 waterproof rating (at minimum), a screen or paired phone app that works in sunlight, low amp draw so a small battery lasts a full day, and a mounting system that fits your hull type — either scupper hole, RAM mount, or castable wireless.
Can you use a regular boat fish finder on a kayak?
Yes, you can use a regular boat fish finder on a kayak, but it is usually overkill. Boat units draw more power, have larger screens, and require permanent mounting. Compact kayak-specific units like the Garmin Striker 4 or Humminbird PiranhaMAX 4 are designed for the smaller deck and battery constraints of a kayak.
How do you mount a fish finder on a kayak?
The most common mounting method is a RAM mount with a ball base in a scupper hole, plus an adjustable transducer arm extending into the water. For inflatable or rental kayaks, a castable fish finder avoids drilling entirely. Sit-inside kayaks often use through-hull transducer mounting with marine sealant.
Is CHIRP better than traditional sonar for kayaks?
CHIRP sonar sends a sweep of frequencies instead of a single ping, which produces better target separation and clearer fish arches. For kayak anglers fishing structure like timber, rock piles, or grass edges, CHIRP is worth the price premium. For simple depth reading, traditional sonar is fine.
Do I need GPS on my kayak fish finder?
You need GPS if you fish new water regularly, mark productive spots, or want to build personal bathymetric maps of the lakes you fish. If you fish the same small lake every weekend and remember the spots by sight, GPS is optional. Castable units with GPS like the Deeper PRO+ 2 add mapping without requiring a screen.
Final Verdict
After testing all eight units across multiple kayak setups, the Garmin Striker 4 remains the best fish finder for kayaks in 2026. It hits the right balance of compact size, low power draw, CHIRP sonar with ClearVu, built-in GPS, and a price that does not punish casual anglers. The 9,300-plus reviews and 4.6-star average reflect what I saw on the water — it just works.
If you want Garmin quality without drilling into your hull, the Garmin Striker Cast is the smart alternative. Anglers who want castable GPS and detailed bathymetric mapping should step up to the Deeper PRO+ 2. Budget buyers who just need depth readings will be happy with the LUCKY handheld or Venterior castable.
Pick the unit that matches your hull type and fishing style, not the one with the most features. The best fish finder for your kayak is the one you will actually use every trip.