This crap has been a PITA a for flyfishers for a while. Rock snot is an apt name for it because it is treacherous when you're wading. Personally, I prefer felt

This crap has been a PITA a for flyfishers for a while. Rock snot is an apt name for it because it is treacherous when you're wading. Personally, I prefer felt boots because they have better traction, but they're also an easy vector for didymo and it's just not responsible to use them anymore since I'm in multiple rivers. I ended up switching to rubber boots. Not nearly as nice to walk in, but far less likely to have didymo hitchhiking along when practicing proper river hygiene.