Posts: 726
Location: Eau Claire, WI | I'm running a 21P Tempest Plus on my 692 w/ a 150 Opti. 45 is about the best I can do +/- 1 mph. About 5200 rpms based on my in dash tach.
I would love to get a few more mph's out of this set up. I'd say you are doing good and thanks for asking the question.
I'm not sure if I should put on a new prop or move the motor up one hole first. There is room to move the motor up one notch.
I wouldn't want a Hi 5 though. the boat I have experience with has a hard time backing up with that prop. A 4 blade might do the trick though.
Jono
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