I got so bored camping BT I gave up after two, and then was when you could layer hop. I parked my hunters around the spawns and just jumped layers.
ive found the best combo of pets is actually 2 BT and a fleshripper on 3 BM hunters, and a MM hunter with wolf for true shot aura and furious howl. The screech BM with the fleshripper is Spec as MT and the two broken tooth are off tanks, I drive from the marksman hunter and heal with a shaman. For PVE that combo just afk/auto shoots it’s way through every instance so far, with only scholo creating slight problems due to deadzones with tight corners / sight lines.

For pvp if it’s a mana user attacks me he gets 4xviper stings and a 4 imp conc shot, one nearly always proc’s. If it’s a mage who blinks into me he gets a scatter shot and i use intimadation and another round of viper shots and I get to max distance at this point they are nearly always oom.

if it’s a warrior or rogue then it’s big red birds and kittie time and just hope I can outheal him before he kills one of my toons.
for a paladin I usually spam stings and hope they’re stupid enough to keep cleansing themselves.