I dont think anyone mentioned airing down. Reduce tire pres to 15 psi (some go lower but you run the risk of the rim separating from the tire = flat tire)
When you air down to contact patch of the tire nearly doubles and is especially good in sand and mud
Airing down manually takes a long time, it can be assisted by these:
When you air down to contact patch of the tire nearly doubles and is especially good in sand and mud
Airing down manually takes a long time, it can be assisted by these: