Largely, I use Detect for the mind game of it, and literally to discourage an enemy NIN from even trying it. I mean, if you're gonna hide, do it before you cross the bridge and into sight range. Every time I see it happen, I go sprinting toward where I last saw them and use Detect to expose them. Then I lure the now-angry NIN behind a wall where thegrown upshealer can't see them, so we can. . . play.