I have a SeaRay 160 with a Mercruiser 3.0 135hp i/o and need to choose the diameter and pitch for a new prop this season. Last year I ran a 14.5D x 18P and could hardly get a skier out of the water. It would max out around 3800RPMs, with ideal WOT at 4500RPMs.
The lakes I frequent are in Idaho...