Chains will definitely get you around in the mud. Back in the seventies I kept a set of chains on the 64 chevy 1/2 ton 2WD silage feeding pickup. I was pushing about 4 to 6 inches of mud with the old girl.
The tires were 7.50-16 6 ply bias street tread. I would have never made it up the hill to the pit without the chains. I was feeding four loads a day, all we could pitchfork onto a 8 foot narrow bed with 10 inch side boards.
Chains in the mud; granny low is your friend. Easy on the throttle. You never want to spin a tire, or you will be looking for a wooden plank and the High Lift jack.
