Roll-in docks feature a heavier-duty rail system, where at sixteen feet, minimal deflection is felt. Patio lengths of up to eight by sixteen feet welded and braced together in one piece can be easily connected to the gangway docks and rolled into the water. These docks are connected with a heavy-duty piano hinge which makes connecting them a cinch. Once connected, this allows the docks to move easily over uneven terrain. The raising and lowering of the roll-in docks are done easily with a winch system attached to the top of the wheel post and will be removed and stored after the dock has been secured and leveled in the water.