Help need advice! I have a 14' x7' alum. hull with a 220 GPU will run dry with a 68" IVO 3 blade prop but I'm going to load it down with weight. I don't mind spending the money for a new prop,I just want to do it right the first time! I measured my cage a 70" prop would give me 1.75" of clearance from the top of the cage plenty on the sides,and a 72" would reduce my clearance down to .75" is that to close? my motor can't move up. Has anyone ever tryed a 70" 2 blade stump puller on a 220 gpu ? will it pull it and do what I want to do? Should I stick with a 72" super snaper with .75" clearance? :? :?