redbull660
Petty Officer 3rd Class
- Joined
- Jul 25, 2004
- Messages
- 76
I have a brand new humminbird 737 tm fishfinder. I have installed it exactly to the installation specs, the problem is that it keeps losing the bottom. It will reed 800 feet and I know the water is only 10 feet or so. It will read fine when sitting still but as soon as I start moving it shows an eratic depth, can anyone help me on this. thanks