From the photos supplied, you CAN NOT call it a miss. In the photograph where the skiers ski appears to be touching the buoy, the front foot has yet to reach the X-Y coordinates(The line from the boat guides to the turn buoy). Once the front foot crosses the X-Y line is when the buoy can be scored as a miss. In the subsequent photograph, there is no visual evidence that the buoy was missed as it can't be seen. Even though it looks very possible, based on the enlarged photograph, that the buoy may have been ridden over thereby significantly displacing the buoy, the photograph showing the skiers front foot crossing the X-Y line isn't available for reference. Thus, the skier is given the benefit. Horton wins.