Looks like the motor needs to up a lot! Could use a short shaft and still raise it off the transom. To give you an idea on what tunnel boats run with no nose cone. In Sport C class I run my motor (center of prop shaft) 5/8" above the bottom portion of the sponson when the boat is trimed at 3 degrees. I use AutoCad to get this measurement. Our class runs an 11 1/2" +- dia x 18" pitch merc prop. Our motor is 40 hp. With a stock motor we see around 63 mph at 675 lbs weight.
Mark N
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