I once was in some really thick, heavy, thigh-deep mud where my feet eventually came together and would not come out. Just a simple, muddy area quite a distance above the water level of a farmer's playa lake. In lifting my feet, I could feel each foot rise a certain distance before coming to a complete stop, probably due to the suction or vacuum below latching onto them. Grabbing and pulling on a leg achieved nothing. Actually resorted to calling for help after several long minutes of trying to get out.
Figuring no one was going to hear me anytime soon, I let a cool, calm head prevail, assessed the situation, and resorted to digging out the heavy mud from around one leg in an attempt to free it. After several minutes I was able to reach my foot, grab it with both hands, and eventually pulled it free with some effort. Propping it upon firmer mud, I was able to lift and eventually free the other leg and foot. It was quite the exercise, I actually felt I would never do something like this again, and a week later I was already searching for another mud hole to sink in.
I wear no waders when sinking, just a t-shirt, shorts, and sneakers. Quite frankly, I want to feel the mud along my skin, and waders, pants, or anything else that would act as a barrier between my skin and the mud are undesireable. And, quite frankly, I consider being stuck as part of the adventure... I want to feel the mud grip and hold onto my feet and legs... after all, the idea of sinking in quicksand or deep mud is incomplete if there's no challenge of getting in then getting out.
I guess I don't actually worry about getting out, but I also ensure that I'm in a situation that won't turn completely disasterous if things don't work out as planned, and I make sure I've got some mechanism available to assist if the situation becomes more challenging than expected.
So, yes, been there, done that, got the muddy t-shirt... in fact, I even gave one of those muddy t-shirts away to a special partner and friend during a weekend of sinking.
