BM Hunter's Multi-Shot Exploit!!

I've noticed this exploit since like 2 months ago when I started farming the goats in valley of the four winds...

The exploit is about the hunter's ability called Multi-Shot that requires 40 focus to cast & while using it in BM spec your pet will AOE cleave all the surrounding mobs, however when you run out of focus you won't be able to cast it...

But if you keep casting Multi-Shot without having enough focus your pet will still cast its aoe cleave ability on the mobs

So basically if you are AOE farming keep spamming Multi-Shot even if you don't have enough focus...