Hello all, my name is Danny. Im new to the forum. Not sure if this is the correct place to ask but i need help with prop selection for my boat. Ive got a 2003 checkmate ZT230BR with a 350 in it. It has a 19p mirage on it right now but my rpms are too high before i trim up. Does anyone know what prop should be on this boat. This prop only does 45 mph and the previous owner said he has had it do 55 with a 4 blade before. Any help is appreciated.