[tommays]

I sail on a C&C 35 with a 2 cylinder 13.5 HP BETA that pushes the boat at 6.8 knots and was pushing us at 5 knots into 30 knots true wind with a nasty 6 to 8' sea

The correct prop is the key as its a 3600 RPM motor and we have never run it above 3200 RPM