Zulu,
There is a short vid on you tube that shows a tractor with 6' tall rear wheels stuck in a bottomless bog. You watch and all seems hopeless until a friend arrives with a couple 7' long 8x8" which are subsequently chained to the rear wheels. Absolutely Neanderthal. All is revealed when he motors right out of the bog with those big windmills like some bad insect in a Star Warz film. It's so funny I had to watch it again.
I'm thinking the TG's would be to get you out of a stick as a last resort. Depending on how bad you are stuck, they could be a one use item. However where would you attach them to my rear wheels?
In the end, my front and rear limited slips, ability to lower the pressure in the tires, and 15K pound Warn winch, plus countless sticks will give me a leg up on doing the unsticking trick. If i look around before getting into trouble and find no suitable anchor point, I'll just gracefully back out and avoid trouble in the first place. BTDT.