Mary,
I'd have to say my favorite was the Seminole County, Flordia Citrus Sail Fest. It was a blast, not just a cat regatta, but 700 boats of all shapes and sizes. The party on Friday night was wild, something like 3500 people just having a blast at the civic center. The saturday night party was just as big if not bigger, free mount gay rum, shirmp, oh what a life. The cops had the street blocked off and as long as you didn't cross the street drunk they didn't care. Awesome racing in december very memorable. Someone should really look into organizing that again.
But now the favorite regatta is CatFight in Muskegon Michigan. 100+ catamarans, three days of racing, more mount gay rum and lots of sun and wind. you guys from down south should consider coming up for it, its a blast.

Leah