That's almost exactly what I do. I can almost completely clear the place before going in. I just wish that they would fix the Bear Hives!handful of wood frames, some arrows and stealth will go a long way. walk the perimeter, nerd pole above the wall, stealth snipe the buggers. repeat at different angles to get em all. once you know where they spawn at, you can skip the frames and just creep thru the poi picking them off as you go