Terbo, the drag boats are only 11-12', not 18'. An 18' boat is used as tour rides and such.

What I am saying is that they use the same physics and principles as the big boats. My boats are 1/6 scale and hitting 40, possibly even faster. So yes, I am running faster than the big boys. The top fuelers are hitting 140+

My horse power to weight ratio is real close to the full size pleasure boats. Just like my lil boats, the full size boats that my friends build are around 5 lbs per horse. The top fuelers are running around 1/2 lbs per horse, some guys are running between 2500-3500 hp on their boats.