I have a 08 bass tracker 175 pro with a yamaha 70 2 stroke bored 20 over. It has a 13 1/4 x 17p ss prop on it now. Full loaded boat I'm getting 5200rpm with 34mph gps. I've been told to move to a 13 1/2 x 15p would get my boat performing better. My dealer does not have props for me to try so...
