Best way to instance 60-65

[MiRai]

To be honest I would just use Ramparts, unless Zal reveals his 2 pull strategy in Underbog [which I'd like to know as well since Ramparts is boring me to death]. Eventually it starts taking 5 runs [or more] for a level with rested...believe me I'm in the middle of boosting 4 man teams in there with my single 80. I've never taken a team to 65 in there before, but I boosted my DKs up to 64 in there. I am boosting just as many teams as you are and I just kill the rested on one team and move on. By the time I'm done with the last team I'm so bored I can't do Ramparts for at least a week and they get some rested XP back in that time.

And you are correct, mob tagging inside of an instance is a ban-able offense. And it doesn't work outside of an instance like it used to when BC launched. XP gained is based on how much that person does to the mob.