I have a 26' Nova ST (28' LOA) with Mercury 350 Magnums. I like the Turbo Hydromotive "Bravo" props on my Alpha drives as they have a wider diameter and more blade surface area and go with a 21 Pitch for power coming out and a nice cruise. These props a quite cupped and dig in nicely. A 23 pitch would buy me only 2 mph more and then the hole shot suffers and more wear on the drives. I tried a 4-blade and liked the 3-blade for my application better. I see more and more big blocks going to 4 blades. I was going to go bigger this year but this thing is so efficient on gas and in such good shape I am hanging onto it. If I remember correctly 3000 RPM is right before the secondaries open up and cruise is around 48 mph. It's not the fastest ride but soild and cheap to keep till retirement and a Top Gun.