I usually start pug WG raids on my server so i have control of the groups from the start. We usually end up with two full raids on our side during the daytime. Every comment I have had within WG raids, with regards to my multiboxing, has actually been very positive and I'm well known for running the pugs now.

My tactic is to focus on destroying vehicles, which is pretty darn easy with four ele shamans and four TS. At other times I tend to hold back and play an intense support role, looking after the gung-ho characters who dive into mobs of alliance with tenacity. Surviving against (and killing) single opponents with tenacity is actually pretty easy if you turtle tank with chain heal and knock them down slowly.

When you are defending, you can lurk on the corner towers, get off a few FS + LB and then hide before any caster can cast on you or death knight DG you. Hiding just inside the choke points created by the destroyed walls is also a great tactic as the opposition tend to run right past you as you are casting 4 x chain lightning on their asses

When the poop hits the fan, popping blood lust and seeing it buff 40 people in your midst is a sure way to cause some carnage!