A protection device for a boat having a rigid hull with a waterline, gunwale and a cockpit is provided. The device consists of a first inflatable bumper mounted to the rigid hull about the gunwale, which will absorb impacts to the hull when the boat is pulled next to a dock or the like. A second inflatable bumper is mounted to the rigid hull at the waterline to keep the rigid hull afloat if it becomes cracked. A mechanism is in the cockpit, for selectively inflating the first inflatable bumper a...