Blood Surf (2000)

(aka) Krocodylus . A pair of entrepreneurs with more bravery than brains hit upon the idea of blood surfing: spreading chum in the water in order to attract sharks, then hopping on a surfboard and riding through the middle of the pack. As they're filming their promotional documentary, the fun gets interrupted by a thirty-foot long salt water crocodile that begins snacking on everyone in the expedition. Will any of them make it back to civilization?