Get yourself a Wyeth-Scott "More Power Puller". It is a 3-ton, 6000#, vertical lift hand winch that will pull 12,000# equal to the slope that electric winches are rated. If you can find an anchor point it would most likely get you out of a ditch.
This!
We hunted a lot in 2WD. You've gotten good advice. Money spent on a Power Puller is money well spent. Add a tree saver strap, and some 5/16" cable or rope. You may get delayed but you won't stay stuck.
