Tuney - Remember draft numbers are at idle, or no thrust. If you give it throttle, the bow of the boat rises and the stern bites into the water. So, to get to plane, you need more than the minimum amount of draft.  If the bow rises 2 feet (I think that's a conservative estimate) when you goose it, you'll need that much more water under your prop. I'm getting the impression you don't drive very often? If that's the case, my advice is to practice, practice, practice. Driving an inboard is not the easiest thing in the world. There's very little directional control when you're at low or no thrust. There's even less in reverse.  I used to pick out a bouy and practice pulling up to it like it were a dock or a skier. Schnitzskis.com has a pretty good, albeit preachy, section on how to drive properly. I'd reference it, but have a hard time finding stuff on his site. (I also find it ironic that he has a section for 'safety' on his site, and then there's a picture of him not wearing a vest)