What is the recommended method to secure a boat inside a lock?

Having at least 100 feet of rope and following the attendant's instructions is the recommended method to secure a boat inside a lock. This approach is crucial for several reasons.

First, using a sufficient length of rope—typically around 100 feet—ensures that you have enough length to adjust for changes in water level as the lock fills or empties. Locks can vary significantly in height and the boat will need to move up or down as the lock is operated, so having the right amount of rope allows you to maintain a secure hold on the boat without damaging it or the lock structure.

Additionally, following the attendant's instructions is essential for safe navigation through the lock. Attendants are trained to manage boat traffic and ensure the safe operation of the lock. They provide important guidance on positioning your boat and securing it properly to avoid collisions or accidents with other vessels.

The other methods listed do not provide the necessary level of safety and preparation when navigating through a lock system. Using only one fender may not adequately protect the boat from contact with the lock walls or other boats, while relying on a heavy anchor does not account for the changing water levels that occur during locking. Avoiding contact with other boats is prudent, but in the close confinement of a