During the first MedCup event we only analyzed our sail shapes and setups at the end of the day, never looking at the VSpars data in real time, but by the time we were out for the first practice day at the second event in Marseille, France, we had a new mainsail to look at. To everyone’s eye, the mainsail looked slightly different from tack to tack, and we needed to get the mast and sail setup perfect before we went in for the day. So, I grabbed my screen while we were sailing upwind, and sure enough, the entry angle at the top draft stripe was 5 degrees steeper on one tack over the other, and the main was setting up 0.5-percent fuller. We had real data backing up what we were all seeing. We adjusted the top spreader sweep and “D” tensions and went upwind again. The VSpars data showed us that this was a step in the right direction. We did this several more times and got the sail to set up identically on both tacks, with real data to confirm it. Without the VSpars system, we would’ve made slight adjustments on the water to get it close, but not perfect. We would’ve sailed in at the end of the day and then digitized all of the pictures. The following day, we would’ve had to go out and to do more rig adjustments to accommodate for any issues we saw in the digitized pictures.