East Coast mud is a liquid. I often have to leave the Commodore's hard at Gillingham to row out to my mooring at low water. At springs it means that I have to row for about 20 feet or so through the mud. I've learned from experience that wellies don't like coming back up when sunk about a metre into East Coast mud. I also remember on one occasion being moored at Pin Mill and having to row through the mud at low water to get out to the boat after a few beers in the But and Oyster. Rowing through mud is hard work but quite possible - good for the winching muscles.