FYI:
Michigan Hovercraft Racing - Brighton 09/17/11
Bishop Lake Races, Brighton MI - Hoverclub of America
They make a lot of noise and can be fun to watch.
We had one sink last year, racing craft are exempt from buoyancy regulations, it was pulled out of the water and raced again later that day.
Fox news is reported to be covering the event. Last year a cable TV build show tried an entry, they filmed it which was kind of fun.