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I currently have an an 1988 Wellcraft sportsman w/Twin 150 carb Mercs non/CR. I get 5600 rpm's with 15 1/4 X 15p Alum props top speed is 33mph on gps. I usually cruise between 3200 and 3900 rpms (21 to 27mph) Use Bennett tabs and tilt motors for optimum plane. The hull is 18 deg deadrise and I...
