Shortly before Malcolm catches the fish, as he is talking to Hal, a powerboat passes from left to right in the distance behind Hal. There is a quick camera shot back to Malcolm for a line, and when the camera returns to Hal, the same boat is closer and heading from right to left.
Kitty is playing patience. Lois reads a book and Abe walks through to take a nap. The way Lois holds the book changes between shots.
Lois, Kitty & Abe walk along the pier with luggage. Initially (from behind) Lois has a grey suitcase in her left hand. Viewed from the front, the suit case is in her right hand.
Playing scrabble, one player makes the word 'suffocate', using an existing 'e'. Players are only allowed 7 tiles, so this would not be possible. The character actually plays six letters in front of A-T-E to get the word suffocate. Closer examination reveals that another letter remains in front of him on the table but off the letter holder.