I assume a Hi Lift jack is what you mean? If so I would have agreed with you a few months ago. I've carried mine around on the roof for several years and have used it 2 times. Once to pull a fence post for a friend and the other to jack up my camper on a road trip when I blew a tire. Certainly had never needed it in a "recovery" situation.
Then this past summer we took a trip out to California and went camping on Pismo Beach. We took the LR3 up into the dunes (tires deflated) and had a BLAST for a few hours. On our way back towards the beach I made a mistake and hesitated in a really soft area losing momentum. Ended up burying it almost to the axel's. After digging the tires out several times and making little progress I finally pulled down the high-lift and the bundle of fire wood I had in the back. I was able to use the shovel blade as a "base" for the hi-lift and lifting through the 2" receiver I got the rear up enough to get some wood under the tires. I then went to the front and lifted from the brush guard. Jumped in, fired it up and it crawled it's way out.
As I said, I've hauled that thing for YEARS and considered leaving it behind a few times. Now it will stay put!