 "GoPro Surfboard Mounts (GoPro Official Mount)" "Camera & Photo Accessories - Page 311 | All Tech Toys"
"Mount your GoPro to surfboards, kayaks, SUPs, boat decks or other gear where maximum holding strength is needed. Includes an FCS compatible male plug to mount your GoPro using an FCS center fin socket." 
 "GoPro Side Mount - support system adhesive mount" " GoPro mount AHEDM-001 Digital Camera Accessories CDWG.com
"Attach your GoPro camera to the side of helmets, vehicles, gear and more. 3-way pivot adjustability makes aiming easy." 