Welcome back to BYC!
We have a lot of rain and humidity here in SE Virginia (I assume GA is similar) and we ended up ripping out our covered sand run at the end of year 2 with chickens. Even scooping poop every day, it became a nasty stinky wet mess. We replaced it with a deep litter mix of wood chips and used pine shavings like our other run and love it.
We have inexpensive no VOC vinyl flooring in our coops, but cover it in a thick layer of pine shavings. The vinyl allows us to easily clean out the coop (once a year or so) while the pine shavings give a cushy landing area when they jump down from the roost. The coop without a poop board has the poop scooped daily from the shavings while the coop with a poop board never has the shavings scooped - only the poop board is scooped.