The next step is for the PRO to approach the sailor, explain the situation and ask him to retire. Again, it would never get this far with a good PRO, unless the PRO knows he has to do it (no competitors were witnesses) AND has a rock-solid case, a combination which is actually pretty rare.
I had this happen at a junior event this past summer. A guy hit the mark, didn't do his turn, I got a call from the mark boat saying they got it on video. Approached the competitor at the end of the day and after less than 5 minutes of discussion about "the right thing to do", he RAF'd.
Mike's right though. 99% of the time, unless the mark is assaulted by the competitor, you're not in a good position to see it. Especially if the "touch" is a graze.
