When I mounted this, the transom angle is in between notches on the position lock. So it was impossible to get it level. Either notch was causing cavitation. I cut up an Ikea cutting board and sanded it into a wedge. Now the transducer is riding level in the water. Not a perfect solution, but it worked. This is the only negative. The transducer is amazing once you get it mounted properly. The bottom maps it creates are incredible.
Rating:
[4 of 5 Stars!]