Actually, I was killing (or at least inflicting some dmg to the) adds as we nuked the boss... When UB heroic daily pops up, I usually go with a premade party of hunter/frost mage/holy paladin... the 3rd DPS is a pick from people we know and worked with before, and most of the times, he's ranged.
As the tank, my main request to hunters is to redirect traffic my way - when adds start spawning, just as mentioned earlier, the hunter multi-shots them and redirects them my way; then, the mage pops a frost nova and I consecrate as usual... With two cleanses, mine and the healer's, getting down is rarely a problem - in fact, in 3 runs so far, I used the Frisbee only once while airborn. I'm not impenetrable - throw
some dmg onto me, and I
will kick the bucket... but the adds aren't that big of a fuss, and since it makes the DPS happy/less concerned if the adds are concentrating on the tank, I'm tanking anything that enters my AoE range. The things I do to keep people calm...
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'The world is grown so bad, that wrens make prey where eagles dare not perch.'
). Cleanse can get you thrown across the room, but run back and taunt, he hits like a small child, the add damage is much worse barring his chain lightning thingy.