I needed a compact, lightweight, portable fish finder that didn't require expensive or heavy separate batteries and didn't cost a fortune. The best tracking devices (with GPS, cameras and all the bells and whistles) require 12 volt batteries. On a large fishing boat, you simply connect them to the boat's electrical system. But who wants to carry a 40-pound battery in a small boat or canoe (or spend over $100 for a "lightweight" 8-pound battery designed by leading manufacturers)? So far my Lucky Model Y2020-CT does the job: accurate depth to bottom (or bottom thicket), depth of schools of fish between boat and bottom, estimating water temperature, hands-free use (it has a wire from a device that hangs from my neck a cable and transducer located over the side of the boat). You really need to read the manual, and you should check out online video reviews that describe its limitations. I find this to be a great addition for those of us who don't invest a lot of money in our equipment and fishing tackle.
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