Well, let's see. You lose power by going to a jet, but, by having a jet, you can go places where a prop can't go. Guess it boils down to, do you want to go where a prop can't go?

I run a boat with an inboard jet, which has relatively little decline in power due to the jet. But there is a decline. Outboards will have more of a decline, about 35%. If you can run where you want to go without a jet, get the prop. Else, get the jet. This isn't hard.
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