I agree with the bad gas, Go to a marina and get a gas additive, run that tank out,or siffen the tank and never buy gas from that station again. Had this problem last year with bad gas. ( Cadiz ) After I put gas additive in both my tanks, still had problems until I ran both tanks out. Just always watch where you buy your gas. I hope that is the problem you have.

With a coil going out, your boat will take 200 lb. person up front and 1/4 mile of water before u will get on plane, and your top end will be around 3000 RPM. Well good Luck