When the mobs are orange I single target, when they are yellow I AOE 3-5, and when they are green I do 6-12 when I was in stockades. Your level compared to mobs is incredibly important. I was doing like 25k/hr in stockades at the end of the range. And you’d use battle shout or demo shout (depending on mob count). Piercing howl is only for the slow and not threat. Get like 2-4 shouts out before using talent threat reduction AE.