Depending on the soil, a friend of mine has about 10 mobile home anchors that he screws into the ground when he gets stuck, equally spaced apart and with chains connecting them, and uses that for a anchor point. He has them laid out and connected with the attaching point at the point of a V. Never seen it done, but that is what I understood from his discription. Keeps interlocking chains as tight as possible during installation and the winch bends them till the slack is all taken up. I suggested binders to take the slack out of the chains but he just does his thing.
David from jax