How do you replace the felt period? Do you need to buy new boots when they wear out or can you get by with re-felting them? Does anyone know of a business that provides this service? I know that felt works real well on the north coast streams, the sandy, and the deschutes. If you want to fish the tidewater or any muddy waters like hospital hole (trask) or ship creek (anchorage, alaska), i would suggest rubber soles or possibly felt with cleats. the cleats work well in the winter if you do any ice fishing.