GoPro Surfboard Mounts
The best point for video capturing is from your surfboard and it can be done with the help of the GoPro Surf Hero Expansion kit. This kit also comes with a base plate for your camera that can be installed a foot from the tip of the board.
This mount will let you have a third-person view so that you can record a video of you on the board with the waves behind. But make sure that you tilt the camera at least 30-45 degrees upwards so you can get the full view of the wave.