When ZBox first came out, I helped get it set up on two boats...’07 Response, and an ‘05 Prostar 197. We had difficulty on our own getting good bouy times on the Mastercraft. I can’t recall who I worked with at Perfect Pass, but he was awesome helping me get it dialed in. Basically my ski partner and I skied 4 sets one day, recording buoy times each pass. We sent this info to the guy at Perfect Pass and he gave us adjustments to make. After this, times got better. We then skied another day recording the same info, sent him the spreadsheet of buoy times, he told us to tweak a parameter or two a little different, and it pretty much shacked the times. I felt like short of Zero Off, it was the next best thing. Very good pull once set up properly.