Originally Posted by
Bovan
Definitely try Survival. Survival has some amazing AoE damage because Multi-Shot spreads Serpent Sting on all targets and also does some instant poison damage. Beast Mastery on the other hand, has very poor AoE damage but edges ahead of Survival on single target fights. If all you care about is topping the damage done meters, go Survival.
Just open up with a Misdirect, Multi-Shot, Explosive Trap and continue Multi-Shotting after that. If you insist on staying Beast Mastery grab a Worm of Chimera. Both of these pets have a channeled* AoE ability that helps you deal some more AoE damage.
*Bear in mind it's channeled, your pet won't be doing any basic attacks or consume Beast Cleave during it.