Quote Originally Posted by gijimbo View Post
Have you tried talking to Lowrance about the issue. It seems to me 20-30 ft is far from acceptable when comes to accuracy.
There are many variables, including where the transducer is located and water depth. The easiest way to check your unit is to park the boat on the trailer and mark a waypoint on both units after gving them 10 minutes to get a good average going. Then take the waypoint values and compare them with a tool like Coordinate Distance Calculator