I broke it in today, then put the wife on the beach. I had a stock 25 Trophy prop and ran 77.4 on GPS. Not bad for a good sized single outboard boat! The fastest I ever ran a 24 with a 300xs previously was 74.6. I think the additional setback is what did it. The hyd jackplate did'nt seem to help at all. I think with a good prop, it may hit 80!