I'm not sure about that call the DNR office and they can tell you. just make sure you check with the man first because they are real serious when it comes to waterfowl as they should be because there are alot of jacka$$es out there. i know the rule in the upstate is you have to be 300 yards away from any houses because we hunted on an island about 400 yards off shore on murray and got called on all the time but they couldn't do anything but rules and regs are very different down that way so call DNR.
You know your hunting in South Carolina when a bunch of ducks fly in and you shot both of them!!