Rick's shirt changes when he's running through the sugar cane field.
When Kiani leaves the fashion photo shoot and asks Rick for a ride to another beach, it's night. When they arrive at the next beach, suddenly it's daytime.
Immediately prior to the Pipeline Classic, while waiting, Rick Kane is wearing a pink rash shirt. He is then shown sitting down, without the shirt, and then heading for his first heat with the shirt on again.
On the very first wave that Rick surfs on the north shore he's on a short board. By the time he gets to the end of the wave he's cheering while standing on a long board.
After the montage of Rick learning to soul surf, and the new logo for Chandler is complete, Chandler asks Rick if he's going to art school. Rick is holding the board where the deck is visible, but when the shot tightens in on them, he's suddenly holding the board so that the bottom is facing the camera.
On Rick's first visit to Chandler's shaping room, Turtle tells him, "Don't touch brah! It's a fresh hot-coat," then proceeds to flip the board over onto its "fresh" hot-coat.
The waves are tiny in the summer, it isn't until winter that the waves are huge like in the movie. Also, the competitions aren't until the winter.
When Rick picks up Kiani at the party, it is night time. Almost immediately after the couple leaves, it is day time. This is the part of the movie where Kiani shows Rick her true home.
In some surfing scenes Rick is seen surfing goofy-foot; in others he's regular-foot.
When Occy says, "I was wondering when you were going to make it into the line-up."