wayne, I have recently experienced the same thing- 07 sabre empty wells, 1/2 tank, & myself planes quickly-very quick even with all holes plugged 175proxs. I did a tournament recently had a feeling before hand to put the 1/2″ hole plugs for ventilation, full wells 3/4 tank & brother in law= very slow planing. It probably wouldnt have planed with holes plugged. So to answer your question 1. lmore ventilation, 2. 23″ prop, 3. do you need a full tank of gas? 4. move some weight forward, 5. 175hp. I think your running too deep, got mine at 3″ below and runs the best of all the different heights Ive tried. John