S.C. Code § 50-25-210
It shall be unlawful for any person to use a surfboard or similar device used as a surfboard from May fifteenth until Labor Day on the beaches of the unincorporated community of Garden City in Horry County between 9:00 a.m. and 6:00 p.m. except in the area from Holliday Drive south for a distance of six hundred ninety feet to a ten-foot alley or to engage in surfing at any time within three hundred feet of any fishing pier. The county sheriff shall arrange for the posting of signs to designate both the prohibited and permitted areas for surfing and the date and time limitations prescribed in this section. Any person who violates the provisions of this section is guilty of a misdemeanor and upon conviction shall be fined not more than one hundred dollars or imprisoned not more than thirty days.
S.C. Code § 50-25-210