Continuity mistake: In the end sequence, where willy jumps the wave-breaker/jetty, in one shot Jesse is on the wave-breaker, in the next shot, where willy starts the jump, Jesse's gone. In the next shot Jesse's back.
Continuity mistake: The sky at the end changes several times from being cloudy to clear. Look at the reflection of it when Willy comes over to Jessie in the water. The next shot is cloudy. The jump scene is clear, and then it is sunny.