Roger that El Jefe.
I finally tried dropping tire pressure down to 30 in the rear and 25PSI at the front axel on my F350 with a Bigfoot 3000. I was nervous about the tire coming off the rim but I took nice wide turns and I made it out through some sugar sand with no problems. I still carry some cut up milk crates I use as traction boards though. It avoids having to air down if you have a short section of poor traction.