Hi there
I have a 1989 28 FT bayliner with the 7.5L king cobra. The motor is rated at 4800 Max RPM and I am running a 15 1/2 X15pitch propeller and the boat @ WOT will do 4200 RPM and has a hard time planing and will fall on its face at 3900RPM. I was thinking about getting a 15 1/2 X 13...