Continuity mistake: At the "Big Pipe" contest the star gets trapped under water when her leash gets caught on some rocks. You see her undo the velcro on her ankle and then abandon the board (with the leash attached). About 20 seconds later when she is diving below the oncoming waves you can clearly see the leash re-attached to her ankle.
Continuity mistake: When Anne Marie is paddling out for her final wave at the contest, you can see several times that her stunt double's hair is down while her hair is pulled back, and you can also see in at least one shot that her stunt double is wearing red bikini bottoms, while she is wearing black ones.
Continuity mistake: When Anne Marie is telling the girls about her time with Matt, the first time after the group surfing lesson, all of the girls are sitting on the bed barefoot. In the next shot, two of them are wearing flip-flops.
Continuity mistake: As Anne Marie walks toward the registration booth at the contest, she is wearing a black bikini bottom that is very narrow on the sides. When she walks up to the table, however, she is wearing a different bottom, a more 'boy-cut' style wider across the sides.
Continuity mistake: When the 3 girls are training for the Pipe, there is a shot of all 3 of them staring at the waves. Eden is wearing a bikini top with an American flag design. The next shot shows them running over to the sand bar and Eden now has on a blue bikini top. Then it goes back to the flag top in the next shot in the water.
Plot hole: At the training sequence, where Anne Marie is running on the sea floor. When they get up, suddenly their surfboards turn up out of nowhere (they didn't have them tied to their ankles, because we would've seen that in the underwater-shots)