Our club has an instructor go stand with people who fly into or near the no fly zone on a regular basis. The implication that they need help seems to remind most people to follow the rules and to tighten up the areas in their flying that might have gotten a little loose. We have had a member who had been flying independantly for a long time go back on the buddy box voluntarily due to issues with depth perception. Sometimes the problem isn't always what it seems.......