underpsi68

I have a labbed 28 Bravo and the last time I had it out it ran 65mph on GPS at 4400-4500rpms with 5 people on board, 1/2 tank of fuel, 4 batteries and full gear. The boat ran 68mph with a labbed hydro 28 in fresh water, 3 people and full gear. I need either a 26 or 27 I think.

Thanks for the help guys!!!