with my SK is to do the tasks of Monkey Rock Island quest from Researcher Higgens, not only did I solo it at 70, it was real good exp got about 40 AA's during the tasks.
Sure it is a pain because you got to wipe the mobs off the islend almost completely four times during the quest.
But it is fun, and there are even a few moments you would not expect like having to cloak into each of the creatures for one of the quests.
These have to be done in order.
I did the whole 5 task progression for about 8 or so hours non stop and went from Indifferent to Amiable,