ECHOMAP UHD2 93sv
4.6(640)4.6 out of 5 stars, 640 reviews, on Amazon at the time this was writtenA 9-inch chartplotter-sonar with Navionics charts built in — the single most useful electronics purchase for a Great Lakes boat.
Garmin
Garmin · Electronics
STRIKER 4 Fishfinder
4.4(12,000)4.4 out of 5 stars, 12,000 reviews, on Amazon at the time this was writtenA tiny, cheap CHIRP fishfinder that does the one job — tell you the depth and whether anything is down there.
Check price on Amazon$120— STRIKER 4 FishfinderPrice shown was accurate on 2026-09-01. Amazon sets the live price.
What's good
- CHIRP sonar performance well beyond what $120 suggests
- 3.5-inch screen and small footprint fit a jon boat, a kayak, or a bow console with no room
- GPS records waypoints and gives a speed readout accurate enough to troll by
- Runs off a small 12V battery, which makes it a workable portable ice unit
What isn't
- The screen is 3.5 inches and effectively unreadable in direct sun with polarized glasses
- No charts at all — waypoints and a trail, nothing else, so it is not a navigation tool
- Loses bottom past roughly 150 feet, which rules out most of Superior and deep Michigan
We list the drawbacks because a recommendation with no downside is a sales pitch. If a cheaper item does the job on your water, the write-up says so.
Also worth a look
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