The only thing i could find on SCDNR. But considering they recommend using umbrella rigs in 35' of water for stripers then i think were ok
Methods and Devices
Game fish may be caught with only hook and line, fly rod, casting rod, pole and line or hand line. Not more than 2 of these devices may be used by any fisherman at the same time, except when fishing in a boat. An unlimited number of lawful fishing devices may be used if every boat occupant (who would normally be required to have a fishing license) possesses a valid fishing license.