I just picked up a 2002 185 FS with a 150 Mercury XR6 on it. My question is what prop should I use to get the most top end speed. Right now it has a 21 pitch ss prop turns 5200 rpms and has a gps speed of 50 mph w/2 large men and full of gear 1/2 tank of gas and live wells empty. Has 3 batteries on board in the back by gas tank. Been reading some of the other post and it looks like alot of you are using a 24 Tempest?