I am having a hard time finding the right prop for my new boat. I have a Seaark Procat 240 which is 24' long and 15 degees. On it I have a 2003, 200 horse Mercury 2 stroke. At first I had a unknow brand 21 pitch prop that had the rpms around 6500. It might have even went higher than that but I did not let it. Top speed with that prop was 47 mph. Then I tried an Appollo with a pitch of 23. It had my rpms at 5400-5600 which is rigt where I want it but the speed was only 46 mph. I have heard of 175 horse motors pushing this boat at around 60 mph so hopfully my 200 horse will get bertter than mid 40's. Can anyone help me out? Thanks CJ.