The document provides safety tips for going through a lock, including wearing a personal flotation device, maintaining three points of contact, and not using hands or feet to fend off objects. It advises tidying extra lines and listening to the skipper's instructions. When entering a lock, boats should attach fenders and steer gradually towards the selected wall. Crews should walk ropes towards the stern to slow the boat and hold it with lock ropes at the stern and bow. When leaving, crews ease out ropes and let go just before the next boat pulls to avoid being jerked.