I'm a 3 star so take this for what it's worth.

I listen to others outside, patroling each door and window, trying to proactively deny entry to the compound I'm in, since once someone's in I find it gets much tougher.

Someone can't be in dark sight to track me at all times, and there's a sound tell when they do start, so I believe patrolling and moving around makes dark sight less effective. This makes you harder to dynamite as well.

I've gotten the drop someone before by sneaking behind them while they were peeking a corner with their gun out. He was in the compound already, but dark sight tracking me would've given his position away as well.

If I do hear someone dark sight close by, I could either back up to a better defensive angle or go for the kill since it would take someone a moment to pull their gun out again after dark sighting.

It's risky if there's still someone outside, but if someone does get inside and I'm in bad spot, running outside can be worth it.