This is a video of a guy who goes into the water with a fishing pole, a shark takes the bait and pulls the guy on the surfboard as he "surfs".
Looks good, but I don't think it's real personally. There's something about the wake the shark is making and the way the guy videoing starts
on the peer at the beginning when he first hooks the shark, then switches to the beach while the guy is ending his ride behind the shark.
I couldn't imagine somebody having the kahoonas to do that behind a shark, and especially one THAT big!
Edit to Add:
Figured out why the wake around the shark looked strange, a boat is pulling the "sharkfin" and the surfer! You can see the boat wake/prop wash when
they do one of the close ups.