I would never recommend anyone use a hi lift jack... but I use them all the time. It is dangerous and you need to understand how they work, know your own and avoid using someone else's. I have winched, jacked, recovered with them and the one time I did not have one I ended up getting so bogged my jeep flooded. But I used the high lift when I got home to lift the front so the water ran out.
Things that are a must have. Hi lift jack points and the adapter. Rock sliders work well too.
Someone mentioned rusty exposed to the elements mechanisms.... I am amazed some people's still work, but frequently see a rusty highlift proudly displaced on a vehicle with no jacking pionts
I keep the mechanism in my recovery box and only the bar is on the roof rack. Mechanism is 10 years old and still looks new. Bar is due for a respray.