Depends on what prop. Talk to the owner, he should be able to tell you numbers with current prop.
Propped for a decent hole shot, my guess on top end would be high 20's to 30. Sure you could get better top end with a different prop but the hole shot is going to suffer (and vice-versa).
Nobody wants to have to ask their whole crew to step to the front of the boat just to plane off.
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1994 Wellcraft V21
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