I have a 22ft 79' Starcraft Islander.
Weighs about 2,200# with fuel and me.
Mercruiser 470 with 1.84 MC-1 outdrive.
My recommended WOT is 4,200-4,600.
New tach (set for 4cyl)
Iphone GPS
I'm currently using a 3 blade 13 3/4 X 21 and can only achieve 4,300 at 35MPH(30 knots). According to the...