I have a 21ft Sun tracker pontoon boat with a merc 60 hp bigfoot. I don't know speeds yet but wot is 6000 rpm. To me it seems like i could use a little more speed as it feels like it is plowing through the water rather than gliding on it. I have been reading on how prop sizes can give more speed but is it what i need. I am new to boating and we have bought this boat within the last two months. Any help would be greatly appreciated.
David
David