@Kensagaku
I hate when people say the "more experience" thing... but in this case, really its ringing true.
It's also really easy to switch mobs, and if your pet has hate on multiple mobs it means you either made a mistake in linking or you made a mistake in aggroing and had to save yourself. Both are cases of player error. If it's a stray AoE you should only have to heel/fight once. If it keeps happening? MOVE AWAY. Isn't that kinda common sense for avoiding AoEs?
You don't understand that there is really glitchy behavior going on here. The problem happens that you get hate on mobs for NO REASON AT ALL. Its not about getting a hit or 2.. because, when its an NM that "hit or 2" means death, loss of claim, loss of trigger set that took some work getting. Its not about fighting, its about having NM claims stolen.

Its not about you getting hate on another mob, its about another mob getting hate on your pet. you don't seem to understand what is going on here.