Bill,
Installed one on my penn yan 2 years ago and love it!!! Picks up thermocline at cruise and everything else that swims!!! Yes it was a little unnerving cuttin that 2 inch hole in the bottom, but the beggest issue was cutting the correct angle on the faring block!!! It came out sweet and have installed over a dozen since then with proven success!!! Anyone interested in installing one or needing assistance id be willing to help! they realy do make a big difference :shock: