You might try something like this. I saw they used something similar in the dakar(mostly thru desert so winches did nothing). Theirs were orange and were advertised during the rally. Any body know anything more? do they work well? I want to have something to help out me and my open diff. sorry for the sorta threadjack but here is a solution
sand tracks have been around forever.. you can get them at military surplus shops cheap.. but the cheapest solutions is carpet scraps they work the same put them under the wheel and you will get traction..