On my hunters I simply use assist macros. I use my main to target full pvp geared warriors, like this;

/assist focus
/cast Arcane Shot

I tap the button a few times, and BOOM! Hes dead.

Just make every hunter spell like this:

/assist focus
/cast Cobra/Steady Shot

/assist focus
/cast Serpent Sting

/assist focus
/cast Kill Command.


Its pretty basic actually, just set focus on your main, and make your toons assist you with these macros