Florida is actually perfect during the winter for fossil hunting! The Montbrook Fossil Dig from the University of Florida might be of interest to you. @rnarducci was the volunteer coordinator for the dig last year, she might have additional info to help. Here’s a write up about it: https://www.floridamuseum.ufl.edu/montbrook/
Also for Florida: The Florida Fossil Hunters ( @cindy-lockner @bonnie-cronin) , the Paleontological Society of Florida ( @proth), the Southwest Florida Fossil Hunters ( @cferrara), and the Tampa Bay Fossil Club all go on a lot of field trips during that time.
For Georgia, @ashley-quinn and @thomas-thurman from the Paleontological Association of Georgia might have leads.
For South Carolina, @rboessenecker and @sboessenecker are from the Mace Brown Museum in Charleston and might have ideas.
For North Carolina, it will be colder, but there’s so much good paleo up there. @lcone @lmccall @julie-niederkorn and a bunch of other folks can help point you in the right direction!
This is just off the top of my head, so if anyone else has ideas, suggestions, or comments, jump in! @bmacfadden, @vperez, @jeanette-pirlo?