Sorry I don't have an answer to your specific query. I carry a cheap pair of flip flops on the back of my pack for this very reason. Just last week I came to a a 100yd beaver swamp I had to slog through knee deep. The flipflops worked great. I did have to worry a few times when I thought the muck had a good hold of them and might eat 'em up. I chuckled when I was 10 ft from the "shore" and I realized I was standing on a bridge that was a foot under water! Anyway, either go barefoot, use just socks (and change into dry) or carry some real light flipflops or sandals.