Get you some 2" angle aluminum (you can get it at Lowes) and cut you off a piece about 2" long. Mount the ducer to the aluminum and then mount it to the bottom of the hole shot plate on your jack plate. I have about 3 feet left over I can send you a piece ready to go if you want and post pick of my install. I fish Wes Watkins which is a stump field here in central OK. Will not leak and wont damage the jackplate.