How does one stop a skin walker? #asknostr
Call a mouth breather
Rebuke it in the name of Christ
Have you done this? I heard they just absorb your voice if they hear it.
While I was being slightly tongue in cheek, it is truly what you ought to do with any demonic encounters (ghosts, aliens, demonic dreams, skinwalkers, etc). I have not met a skinwalker but I have had a number of other experiences and calling upon the name of Christ, even just in one's head, is what expells the darkness.
Black mountain ash
Flay everybody, and then cover them with transparent film. "A naked man has few secrets, but a flayed man has none" - George R R Martin, "A Clash of Kings", novel, sentiment voiced by character Roose Bolton.