RE: North Carolina Windfest
You should hook up with the Baltimore Area Boardsailing Association (BABA) and get on their email list. http://www.windsurfbaba.org/ Lots of those people go down for windfest. Or post on other internet windsurfing forums like Google's rec.windsurfing or iwindsurf http://www.iwindsurf.com/community.iws
I have sailed formula gear in Hatteras with a 56 cm weedfin, but it's kind of a pain in the butt to walk out that far. If you have a longboard or moderately large shortboard with a fin <50 cm, that would probably be better. There's lots of boards to demo so you don't necessarily need to bring everything you own.