i'll chime in here with my own situation. i have a 15' Dynatrak fiberglass bassboat. i have a 1993 Johnson 60hp. my prop is a black michelin i believe 13 1/4 x 17 three blade prop. i also installed a hydrofoil which gets me out of the hole VERY fast.

After rebuilding my carbs and installing a tiny tach, at WOT i run at 40 mph and my rpms get up to 6100 if i really get on it and trim it all the way up.

i know that's too high rpms and do not push it like that, per my manual. afraid i'll blow my motor.

i've been told i should try changing to a 13 1/4 x 19 to lower the rpms. what do you guys think? how will that affect boat performance, hole shot, top end speed, etc?

i'm content with staying with the black aluminum. anyone try one of those 4 blade comprops they sell in basspro? what will the 4 blade do compared to a 3 blade?

nathan