[eggsuckindog]

Sounds like it could probably go higher - 1 to 1 1/2" above the hull bottom for the Cavatation plate. You probably could swing a 19 which would give you a higher cruise - although I would get the motor set up right and get a normal load in it and see what it does. If it is a 90' V6 rather than a 60' it likes it about 5300/5400 the 60' about where you are. Keep in mind that T Top is like a sail and the faster you go the more drag - 40 is very good though