Hunter Macros - Avoiding Stray Shots

I have been trying to make a macro that with keep me from accidentally spamming a a new target.  Because hunter's have a longer range than most classes a hunter can easily spam a stray shot after killing his target since the next shot upon finding no target will lock on any other target in range and fire.  Not so bad when you are out in the world but in a dungeon it can be a wipe waiting to happen.  I recently discovered "/targetenemy" and "/startattack" for my melee characters and applying them in my melee rotation has been essential in smoothly transitioning from target to target.  Tanks (in general) need that continuity to assure that the rage built up from their last target feed into their next target.  Due to the short range of melee pulling that stray target way over there is not even an issue.  For hunters since most of their attacks are instant I would constantly inadvertently pull that mob over there so finally after a lot of trial and error here is something I find workable into my shot rotation macro:

/targetfriend [noexists/help]
/startattack
/castsequence reset=target/combat <shot 1>,<shot2>,<shot3>...

For this to really work you have to make sure that the option to STOP AUTOATTACK upon switching targets is enabled (which means do not auto attack on a switch target).  It is not foolproof since I still for some reason will occasionally target but not fire upon automatically neutral targets.  But what does do most of the time for me is that when my "enemy" target goes down I end up targeting my "friendly" pet.  I have yet to fully test it in an instance but been pretty happy with it in my shot rotation macros.