Prop diameter and pitch are important, but that's not all. Blade geometry is a big deal. On a heavy boat like yours you may need to go up to a 11" diameter. If you're not running a semi cleaver you should be.
Modern 4 strokes aren't much heavier than 2 strokes, so weight difference isn't as big a issue as it was with 1st generation 4 stroke outboards. Just gotta decide which one works best for ya.
Get a tiny tach and find the right prop you shouldn't need to repower, unless you just want to.
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Last edited by willyworm; 06-16-2016 at 12:05 PM.
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Delta in a nutshell: Breeding grounds + small wetlands + big blocks of grass cover + predator removal + nesting structures + enough money to do the job= plenty of ducks to keep everyone smiling!
"For those that will fight for it...FREEDOM...has a flavor the protected shall never know."
-L/Cpl Edwin L. "Tim" Craft
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