I know leeroys are "pointless" but not all exploits are. Anyways, if you want to boss pull without worrying about getting called out via combat logs or text simply use "Elune Stone" which is obtained from the elders quests. It brings down a beam of light, which basically all you have to do is drop it UNDER THE BOSS'S HIT BOX. The boss will then target the closest person and kill.
Test it out, and +Rep if you like this exploit
Enjoy!
(I was doing this in ICC before festergut, so yes i can personally confirm it works. Enjoy all the "OMG WHO PULLED")