macro racial if you have one(berserking, blood fury etc) trinkets, rapidfire, kill command everything together
either use everything at start of fight or save it if you lust at like 80/90% etc
then..put pet on boss,misdirect the tank, serpent sting, chimera shot and aimed shot on cd and spam steady shot in between cds. use misdirect every cd so you dont have to fd every cd etc