Currently, I have an aluminum 13 1/4"x 17p prop on my Crestliner 18' Bass Hawk which weighs approximately 1700lbs w/ engine. 3 people, average 20 gallons of gas and 3 adults on board. The current prop will give me a wot of 5500 rpms at 38 mph. Getting to plane is slow, tubing with the kids is...