I'm trying to find the right prop for my boat, been looking at alot of sites, alot of formulas but still confused. here's what i've got: 20ft. proline cuddy with 200 johnson, 3blade prop(alum)14.5x21inch prop, wot=4000rpm, manual says wot should equal 5-6000 rpm. how could i pick right prop that will raise rpm to recommended range. top speed is 35mph now.
