so you've arrived to stranglethorn vale, you run around accepting quests from booty bay and your faction's settlement thingamajig, and you end up with 4 or 5 bloodscalp quests, you think "z0mG! so many quests i can do together, great!"
one problem, the trolls usually hang around together in groups, so a pull of one might even come with 3-4 mobs resulting in retreat or death, but aha! there is a solution, and no need to even move, and little downtime even for mages
just go to the coords [33.3,15.8] (look at the pic)
and kill the trolls from OUTSIDE the little ruins or house or whatever you want to call them, now pull a troll that's inside, instead of running straight to you, he will run around the house a long way, allowing you (o n a mage) to land up to 4 firebals on him, killing him far away.
searched "bloodscalp" and " stranglethorn" and nothing came up.
on a side note, this was done on a fire mage with flame throwing talent.
GL