I think that would work in soft ground. Normally on rocky ground, the chances of getting stuck are much less anyway.
Made a stupid mistake on Saturday, went up the hill after heavy rain and got the back wheels bogged up to just below the top of the wheel rim in a cross ditch. Yep, it went straight down on one revolution of the wheels, the axle was completely buried.
No trees and the ground anchor was sitting in the shed with my shovel. What a clown I was, and it's very remote up there.
After thinking it out a bit, I removed the baseplate of the high lift, slid the jack mech off the main leg. Then I hammered the leg into the ground at about 45 degrees raking away from the truck.
It went in too easily for my liking, so I drove it in so that only about 9" was showing. I dropped the snatch block over it and looped the winch line back to a bumper shackle.
Under low drive on not much more than tick over, with everything locked, I winched out and it held. After freeing myself, I had to winch out the jack leg!
I'd bent it a bit, but with some careful chocking with wood and driving a truck wheel along it, I got it straight again. No photos, the camera and phone were back at base too.
back to the thread, I recon that would be worth storage space. My ground anchor must weigh 20+ kilos!