@Ed_Johnson, looking at the settings you used on the Vapor, forward DFT with the CG Fin, the numbers are much different than what I found to work. When I went forward the ski turned sharp, but the tail felt like it slid in the turn and the back of the ski became unstable or loose crossing the wake. I am at .742 DFT now and find this position to work well. Did you try moving DFT back from your standard fin settings by .030, at a minimum, as suggested by @AdamCord, and if so what were the results?