I take no credit for this,
http://www.mmowned.com/forums/wow-ex...-lvl-74-a.html
After reading that or if you already know, here is some ways to ease the pain doing it earlier in the day. (BTW this is a guide but came from the exploit so I figured I would post it here.)
1.First off, if you are grinding the mobs and someone comes to do the quest, you can put back on your disguise from the quest (if you have it), and the boss will not start attacking you right away.
1a. After you put back on your disguise you can tame another troll and then do your thing.
2. After the boss dies and you still have your troll, I usually jump down and...(I am a druid)
Starfall--->Barkskin---->Hurricane all with the pet on defensive, and I can usually get about 30-40kxp in 10 or so seconds.
3. Common Sense but bring lots of water and food if you intend to be here a while.
If you have never done this before it will not make much sense but...those are some nice tips.