I was trying to think of what many expedition worthy boats have that rigs usually do not, and this came to mind. Some of the bigger vehicles posted on this board have had a hydraulc lift on them, probably for dealing with the big spare tires. They can be simple and very light weight. Handpump or powered. At One time i wanted to make my rock sliders removable so they could pin to the bumper to be used as gen poles(A-frame) with the winch. Of course thats not as useful as a regualr lift, mainly because you can't swing it around. But i've seens some pretty cool stuff done on the back of a winch truck with poles. I ended up just making a dedicated slide in a frame for winching logs up the hills on our property. They otherwise couldn't be winched because they dig into the hill. What good uses can you think of that would really justify one? What good designs are there?