my last (only 1 time, most runs break up in the middle) successful kill off the boss, we have a pally doing the Mob tackling, and I as hunter focus dps on boss, but send my pet to help the pally bashing add. I heal my pet when needed.

and also those not melee on boss will stick to the corner of the area, to minimize chances getting hit by blade dance.
If I not mistaken, I probably didn't get hit from the dance. Also non tank will self-heal\bandage. 1 priest is gonna tight on mana for healing, focusing on tank only.

The annoying is 3 of the regular incoming mobs, 1 of them is ranger, with "Scatter Shot" ability, mob tanker\clear should focus this one, if he shot the tank, you gonna be pissed