I look for sneakers that are at least not so heavy when wet. Like most, I just trudge on through once my socks and sneakers are already wet. Something that works sometimes is to take you shoes and socks off and walk barefoot for a mile or two now and then, in the dry sections I mean, not the mud. Doesn't really give your shoes and socks time to dry, but it does give your feet a change. Spruce and pine needles and gum are particularly soothing, I think. Always helps to have a light pack, and gut.