losethestraps.com

Woah. This brilliant vid shows a couple things IMO:
-there's no limit to the size of a guy's balls
-a sharp rail goes a long way for controlling a board
-there's no proper "down the line" with fins. No, seriously: without fins and off the rail only, the board's got a different angle to the water surface, making it (almost) impossible to pull a bottom turn, with waves of this size and speed.
-mad skill. Congrats. Dude.