The Lifesling was developed for sailboats, but with some inventive rigging it is also extremely useful on power boats. The biggest challenges are finding a good location for the Lifesling and, most importantly, figuring out how to rig the 5:1 Block and Tackle connection-point that is high enough and strong enough. The classroom portion includes a video, photos of rigging scenarios, and how to. The lab portion is where YOU will actually practice lifting someone from the floor and into a mock-boat.