Fish Finder.

[cpierce]

You might try looking at the float tubing forum. Tube Dude and others have some creative ways to mount sonar units on float tubes and pontoon boats. You might be able to come up with some thing similar for your situation.

Here is one example:
http://www.bigfishtackle.com/forum/gforu...ar;#545671

Or just use the search feature and look for "sonar" in the float tubing forum.
[signature]