Having bought great depth finders (console & T/M) I am now trying to learn to recognize what I am seeing on the screens. So far I have not found a VCR/CD that explains what I am seeing. There are instructional VCR/CD's that tell how to use it but the manual does that. Okay, to the point. Now I am thinking of buying an Aqua-Vu DT-100 that I will operate under my T/M to see what the depth finder is showing. I probably will not be deeper than 30'. Any ideas if this will be of help here in KY? Has anyone tried this?