REMEMBER
USING CHAINS
This is normally not the first choice, it would almost be like slinging the casualty.
To run the chains properly: come up under the axles over top of the frame and hook them together. (Do not hook into the frame. Go chain to chain and from the 5th wheel plate.) From there go down, under the axles and back to the cross bar and receivers.
Using a piece of aluminum or angle iron would be useful, as the chains come up wider than the actual frame rails.