Jumpoff_Joe wrote:stepped on a submerged nail
Footwear actually can't protect feets from the hidden nails etc so it's a sort of illusion of safety, it will punch sport shoes etc without any problem. So it's very important to properly walk in mud, without fast, breaking-through-mud movements. You need to step carefully, gradually pushing feet into mud and finding relatively solid layer with your feet. And only when you touch something like bottom - you can carefully step on this feet with all you weight. So if you feel someshing sharp or incomfort in mud with your feet you can move feet and avoid it any time. And extraction of feet should be made in the such a manner, gradually pulling out without fast forced movements, slowly "screwing out" your sole from the deep. It needs less efforts to overcome a suction and avoiding traumas.
In this way it's enough to wear aquasocks for protection, or even do it barefeet with some experience (but it seems to be a bad idea in the tidal mud because of natural sharp stuff inside it).
But such a way of walk isn't typical for our muscles so it may be difficult in the first time. But it will be much simplier after some mudwalks.
Now I use aquasocks only if it's too cold or if I need to move rather fast and far, barefeet is much more pleasure.