[Lakegeezer]

We had a similar navigational challenge in our neighborhood, although I can't figure out why. There is a buoy set out from an island, marking a ridge of rocks from the island that are close to the surface. Yet, once or twice a year, someone (including once a marine patrol boat) went on the wrong side of the marker and hit rocks. The solution, as discovered by a neighbor, was to add an additional white Clorox bottle buoy on the rock side of the marker. Since then, everyone figures out which side of the buoy to go on, and nobody has hit the rocks. A simple solution that maybe will work in your situation.