I don't even hide man, I just walk with my motion tracker up and go in the opposite direction he is at.
If the dot is faded and he's moving all quick he's in the tunnels, if its big he's on ground level.
The novelty of Isolation wore off pretty quick imo. I dig the game designs and the world which is why I'll play it until I beat it, but the actual gameplay mechanics just aren't my kick.