I have an Alweld 18’x89” cc boat. Hull weight is 1040 #. Figuring battle weight at 2200#. 2017 mercury 115 4 stroke with a 2.01-1 gearbox and WOT rpm of 5-6k. I’m trying to find a good prop for this boat, so far I’ve tried :
13.5 x 24–Will run on plane but only 4500 RPM
13.5 x21–Blows out
13x19...