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Thanks I really appreciate the info. 37-38mph top speed is was what I have read for the yamaha F70 so good to hear you guys have the same info. The other option is a 90 etec but that is about 65lbs heavier and again I would really like a 4 stroke for it being quiet and not to have to burn oil, etc. Sounds like this hull will get to the 42-44mph range with a 90 etec. So is it true with the 16ft hull going from a F70 to a 90etec (increase by 20hp and 65lbs of weight) you pick up about 5-6MPH in top end speed?