RE: 48" Viper
I have one of Verns 48" hulls with a 1st stage mod from Marine Spec. 22cc. with water cooled pipe. I hit 48 mph, gps, and it would not take much to loose it beyond that. Prather 275 prop is the best I found. I also have another of Vern's hull, 57 Cat, with zen 260 and steel pipe, dry, and the 280 prop is too much. That prop used to be on my Homelite, low rpm but high torque motor that could turn it easily.