This may be a long shot but it could be a nice venue, if we could get permission, transport, etc.. There is camping and it looks good for wind from most directions. Kent has been talking about doing something around the island for years. It doesn't seem to have beaches on the Atlantic side, perhaps seawalls and shallows to go with. Does anyone know?
Boca Chita Key
More info at:
http://www.key-biscayne.com/kb/keys/bocachita/
http://www.biscayne.national-park.com/camping.htm
http://www.nps.gov/bisc/visit/camping.htm