I am able to go 18mph and want to add a few mph as I would like to be able to pull grandkids on skiis. It will pull a skier but barely... Can I upgrade to a 90 hp as another possibility?
I have a 2009 Sedona with a 4 stroke Yamaha 60 hp. Have a 14x11 prop and it only gets 18mph with an RPM of 4700. What should I change to? New to this so bear with me.. :)
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