Well,  I have spent some time in that southern mud. See, we were only aloud to wear are US Army issued boots though.  I was throwing out a suggestin I've tried up here. Our mud in New England isn't that bad though. Must be the clay in your mud that's just brutal. Every step your boots get bigger, thinker, wider, and heavier. I figure maybe with the plastic, it wouldn't stick, but you guy's know better then I, Good Luck.

I know this may sound absolutely nuts, but, how about trying some old skis? I'm sure they are a bit hard to come by for you guys, but people throw them out up north all the time. If you'd like I could find out how much it is to mail you a free pair. Just need to know your shoe size. Cross country would work even better. It's almost like walking, just kind of suffleing along insted. With a couple poles to stableize you you could most likely slip across that in a jiffy. You figure, you punch right through snow, but with the skis you sit on top?
 Besides anybody sees you sking acroos that bog will stay clear of you anyhow. They might figure your loose and worry about getting shot!!