Okay, I'll play. Theoretically a 37'9 1/2" boat could have less wetted surface in the water and be faster-overcoming the decrease in possible lift. Remember that most boats only have a fraction of the hull wetted-esp cats. Assuming a 2 foot wetted surface at speed the 2.5 less inches would have a much greater effect than 2.5 inches of a lift area that is 30 plus feet long. So there ya are...thanks for playing.