RE: starting up windsurfing interest ..again
Precision, or obstacle course sailing might be another activity that could be fun for experienced and beginning windsurfers. The course could require some stern first sailing, clew first sailing, very precise turns, etc. whatever shows off and requires all of the manuverability of a sailboard. Such a course works best in light or very light wind. Set the course very close to shore so spectators can easily see what is going on. Such a course does not require any organized start or any timers. It could be there for anyone to try as they have the opportunity. Or you could have designated start times and timers as in a race, but each sailor would have an individual start.
The first major problem with this suggestion is the number of markers required. They can be very small, like a gallon plastic jug, because the distances are very short.