Hi Santiago,
I know what the ground anchor in the photos is. It is called a Terra Grip. It is not made any more, too heavy, too many moving parts and too big to carry. Never really caught on. It works by screwing it in to the ground down to the knuckle which is covered by the spring. You then fold it at the knuckle so the top half is lying flat on the ground and pointing at the stranded vehicle. The cross bar at the top, that you used to screw it in, is also lying flat on the ground so you pick it up a little and slide the plates on each end and fasten then so they are hanging down and sloped forward slightly. The winch hook is attached to the steel loop, near the top, and the idea is when you start winching the blades are pushed down into the ground giving grip together with the auger part. Like I said it never really caught on and was too expensive.
That Lan-cor looks a lot simpler. What are you guys thoughts on that one.
Hope that helps,
Milsiey