Do any of you guys remeber that thread by Steve David on his 43' Black Thunder? He had triple whippled (that just sounds cool!)hp500s that he experimented with props and kept accurate data with each setup. I know that boats are all different, and that you can even show gains from either end in some cases, I just thought it was real interesting how he progressed though different props and slip. I think he ended up with 5 blade hydros and a very low slip number for that size of boat. I wish someone could explain the details between a result like that and one like Wette Vette's. Why is it that some rigs do better with a higher slip setup than others. I think Audacity mentioned some time back that he got 3-4% slip on his factory class boat..

Those low slip #'s are only possible if you don't count the cup as pitch.