Myer, I don't want to put your idea down, but I just returned from 6 weeks in Florida and there is a huge difference between shooting there and here which makes it easier for group get togethers there.
For one thing, you can meet at a spot and almost be guaranteed of subjects close by. Plan on Ft Desoto lagoon, there are at least 6 good birds to shoot. Up here, I often drive to and from a location without taking a single shot.
Also, the birds are not skittish down there. One morning I was with a group of 6 photographers shooting the "famous" reddish egret - all of us within 40 feet. The bird ignored us. Here, that many photographers would surely spook most birds.
I belong to another group (NikonCafe) and New England members have get togethers, bu it is to shoot an event like Chinese New Year or St. Patties parade in Boston.
I like to meet up with a friend on shoots but groups tend to be counter productive to me.