Down imaging is much more detailed than a traditional sonar. If you idle over standing timber you can see the individual branches on the trees and for your other question yes 3-6 miles an hour is what is suggested.
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Down imaging is much more detailed than a traditional sonar. If you idle over standing timber you can see the individual branches on the trees and for your other question yes 3-6 miles an hour is what is suggested.
Senior Member
Onix by Humminbird with SI and 360 with GPS and digital map cards and the largest brightest screen you can afford.
Remember that Side Scanning Sonar found the Titanic. They would still be looking for that ship and many other sunken ships if they were just using DI or regular sonar units. SI covers so much more bottom than any other device. It's well worth the money. Save your money until you can afford to get some thing with SI and GPS combined along with a digital map. Other wise just get a map of the lake and a weight on the end of a marked rope for depth measurements.
Member
I bought a Humminbird Helix 5 DI this spring. Color screen and down imaging for $250. I did kick in the extra money for a ram mount but for the money, really hard to beat it.
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