Hello, just bought 2000 wellcraft boat 20ft - 8.5 ski boat. Has 17 pitch 15 1/4 prop on it now. RPM trimmed is about 4400 motor is 305 , drive is alpha 1 generation 2. Am going to buy stainless prop and use alum for spare. Not going to use boat for skiing,would not mind some more MPH. Get alot of conflicting info from people. Can i go to 19 pitch and benefit for what use i want MPH . Would greatly appreciate any advise or suggestions on pitch , brand for price etc. Thank you for reply.