Here's what I've seen so far:
South Coast
Buy a surfboard and get a traction pad and leash for $29
http://www.southcoast.com/surfboard-package-deal
Hanger 94
25% off everything in the store Thanksgiving weekend (except skate decks and surfboards)
http://www.hanger94.com/
Muir Surf and Skate
15% off everything Thanksgiving weekend
http://www.muirskate.com/
Ocean Beach Surf and Skate
Parking lot sale Nov. 29
http://www.obsurfandskate.com/events.htm
