Bruce,
There are two J30s in Grand Haven, Meistari Hull #454 and Frank Lloyd Starboard. We race PHRF Wednesday nights off the Grand Haven pier as part of the Grand River Sailing Club racing program in Grand Haven. Jeremy has described the situation very well, I would only add that the Anchorage Cup is the Saturday after Labor Day each year and runs from Grand Haven to Holland. The 2 J30s in Grand Haven typically do this race.
Brian Kelly
Meistari hull #454 co-owner