Hi
There are a variety of pads that the 4x4 guys use to get out of the mud. They range from pretty cheap ($50 or so) up into the yikes !!! ($350) range.
https://www.amazon.com/gp/product/B0...2SRM3L5F&psc=1
How large a footprint you need will depend a bit on just how muddy it is. You can burry just about anything if it gets wet enough and the soil is right.
Regardless of what you use, it will be a mess when you are done. Having water available to rinse it down is a good idea
Bob