I may try shoving an insole inside one of these days.

If you're going to try the lighter thing, pass the flame under it VERY briefly, and go over the spot a couple times if once isn't enough to clean up the frizzies. If you hold it still I imagine it will burn quickly.

I finally wore my main work pair down after years of frequent wear. Been melting away the frizzy spots that crop up where they get scuffed with a lighter, but starting to just look ragged.

Far and away still the best shoes anyway. I just wish they had more support.