I'm having difficulty trying to figure out the best prop for my 1997 75 hp Force by Mercury. It came with a 10-7/8 x 11 prop. The max rpm for the motor is 5250 rpm. At WOT it was running at 5850 rpm. At 5250 I was getting 28-29 mph (GPS). I ordered a 10 3/8 x 14 prop with the hopes of getting...
