take a lawn sprinkler and slid it under your rig and let it run for awhile so it presoaks and helps loosen up the mud, then hit it with your washer and use a leaf blower , repeat until satisfied with your clean up then use the blower again to help dry it out..,,
if you look at my avatar im no stranger to mud and i dont even try, most of the time i try and avoid it,,,,----but it,s hard not to get it this way around here this time of year.
this works for me and take note on weather conditions in your area i dont do it if we are below freezing and let it set awhile your brakes will freeze up,,-best time is rite before a good rain then drive around then do the sprinkler and blower..
4inch suspension lift,3inch body lift,4.0 5 speed,8.8 with disc,s,16inch moto metal rims ,and some 35s..
with trail rash..and getting 25mpg,s