I have a Solas 3 blade SS 15 1/4 X 17 prop on Honda BF225 with Key West 23 WA and turn 6200 rpm's with 2 people and 1/2 tank of gas. Top speed is about 48mph. With more than 2 people and/or with near full tank of gas, I seem to need a bit more stern lift and thus am considering a 4 blade SS...