via West County Explorers Club: Jonathan Hanson has a good post on Overland Expo about a Hi-Lift accessory called the Safe Jack. It offers the same floatation as the popular, orange, sand and mud base but adds the benefit of stability. Jack the entire front or back of your truck off the ground with the Safe Jack installed on the Hi-Lift and the jack is stable instead of dangerously falling to one side or the other.
Link trail: Overland Expo article > Safe Jack