Under $300 you can still get CHIRP sonar, GPS and often down-imaging — the meaningful features. You mainly give up bigger screens, side-imaging and live sonar. The Garmin Striker and Humminbird Helix 5 families dominate this bracket; picks are sorted by price.
At a glance
The picks
1. Lowrance Hook2 4x GPS Bullet
The cheapest honest way to put GPS on a kayak. Its wide 44° single beam covers roughly double the water of a standard 200 kHz cone, and the 4-inch SolarMAX screen fights glare — waypoints and clean 2D returns, no charts to fuss with.
A no-frills 2D finder for anglers who just want to see depth and bait. DualBeam sonar on a bright 4.3-inch color screen covers the basics for under $120 — step up to the DI version if you want down-imaging.
The long-running budget benchmark for small kayaks. CHIRP 2D sonar plus built-in GPS waypoints in a pocketable 3.5-inch unit — the default first finder that thousands of kayak builds start with.
A castable sonar that pairs to your phone — no console, no battery box, no drilling. The GPS version maps depth contours as you cast, which makes it ideal for tight or minimalist kayak setups and shore days.
The castable kayakers actually swear by. Three-beam sonar and a high-precision internal GPS build real bathymetric maps from the deck or shore, with about nine hours of battery and zero mounting.
6. Garmin Striker Vivid 5cv
The sweet spot for most kayak anglers. It adds ClearVü down-imaging and Quickdraw contour mapping to CHIRP 2D on a crisp 5-inch screen, with seven color palettes to cut through glare and murky water.
What to look for
At this price, a unit with GPS and CHIRP 2D covers 90% of what a kayak angler needs. Down-imaging is a nice bonus if it fits the budget.
Sub-$300 side-imaging is rare and hard to read on a small screen. Put the money into GPS and a clean 2D/down-imaging picture instead.
A castable like the Garmin Striker Cast or Deeper fits this budget and needs no mounting — ideal for minimalist or multi-boat anglers.
Frequently asked questions
Absolutely. The Garmin Striker 4 and Vivid 5cv, Humminbird Helix 5 and Lowrance Hook families all land at or under $300 with CHIRP sonar and GPS. You give up big screens and live sonar, not core fish-finding ability.
Yes — it is the feature most worth keeping under $300. Marking spots and mapping contours pays off every trip, whereas side-imaging and touchscreens are luxuries you can skip at this price.
For most, the Garmin Striker 4 (around $130) is the value benchmark: CHIRP sonar plus GPS in a compact unit. Step up to a Striker Vivid 5cv or Helix 5 if you want a bigger screen and down-imaging within budget.
How we chose
Every spec here is pulled from the manufacturer or an authorized retailer and standardized. We rank transparently and never for commission. Full methodology →