My tactic is pretty much the same as Long's, I go to the thickest, brushiest place I can find. If it's located in a good wind-break, that's even better. Once I've found the general area, I just try to find the trails they're using going in and out of the cover. Preferably, I like to watch where two trails cross or come together in the cover, but if I can't find that, I just pick the trail that I feel best about and watch it. Often you can't see over 30yds in these kinds of places, but just be careful of the wind direction, be very quiet, don't move unless you truly have to, and pay attention because they'll sneak up on you before you realize they're there.