I have a 1996 Rude 90hp on a 1996 Smokercraft 17.5' deep-vee aluminum boat. I have a 13x13 that came on the motor, and a cupped version of the same as a spare. I get light load top speeds of 40-42mph, and somewhat heavy load speeds of 35mph...which is about all I'd expect...but my WOT rpm is...