My question is what is the difference in the pitches and what does the pitch number do for the boat. I just installed a 90hp force on my 21 boat were it recently had a johnson 115hp eng runs good boat seems a good bet slower and planes slow. I think i can change the prop and help things out but I do not know what pitch to go to. my pitch now is 11 and the old eng prop seems to have a lot more angle than the new one.Thanks for the help.
