Most docks are concrete and have two entry and exit handrails. These are spaced so as to allow the attendant to use one to steady themselves while helping the customer who can use the other dock rail as well as the assistance of the attendant. Avoid using swimming pool handrails, as they are too low and if not carefully installed, can overhang the water too far and damage the hull of the boat. Bumper boats are always good fun and appeal to all ages. With a minimum rider, they enjoy a large customer base.