My Garmin 3210 has video input capabilities. It is 256 color compatible. I have tried several UWCs (composite video out) and have yet to find something suitable for Ky Lake. Visibility is about 2-3 feet on a clear lake day. I use the Garmin and my daylight viewable Motion Computing (XP) tablet for viewing. No view shade or visor required most times..
I use it for looking under the flotation of my dock and under the boat lift tubes.
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