I hunt in Rockingham NC, and Florence SC. As far as I know you are not allowed to bait any area that is publicly hunted. You can however hunt over corn and salt licks on private land. The best time to hunt over Salt Licks is when it's still hot out. The deer will use salt to keep insects and ticks off until the weather starts to get colder. I shot a doe on opening day in the NC piedmont region (Sept 11). They only hit the salt lick for a week or so after that.

Good luck