I was boosting with my feral druid last night (he's cat dps spec) - It was absoultey fantastic.

WIth the druid I cleared the initial corridor, parked my lowbies, and stealthed to the doors. As an 80 you can open the doors without aggroing the guards on either side. Initially I would stealth in, faerie fire the boss then switch to bear and gather up as many mobs as I could on the way back. However I did seem to take more damage that way (and I actually died once when I tried to put on barkskin and hit thorns instead. My night elf form doesn't take damage so well and it took me a couple of seconds to notice. Stupid and embarrasing ).

Later I would just faerie fire the boss in cat , hit sprint and run straight through the fountain, drop down to the pool, and go round the corridor to line of sight the casters. I would then switch to bear and melee them all down.

I did have issues with runners who seemed to run off, and at the point where they would return seemed to aggro on my lowbies and kill one of them before I noticed. I got a bit better noticing this. after I killed the initial pull I would spend a quick couple of minutes rounding up those i missed (I hit the instance cap anyway so had time to do this).

I went from 20/21 to 29/30 on two characters in about 2.5 hours all told (not including the running time from ironforge to the instance)

This wasn't a chore at all - compared to my previous boosting experience in there on a level 70 hunter a few months back where I could have banged my head on the desk to relieve the monotony.

One issue I had - after pulling the first boss I would never drop out of combat. Turns out the lady boss had spawned but just stood in her room. If one of my characters had died and battleres wasnt up I couldn't res them. In the end I found I could just shadowmeld to drop combat then res them. Then clean up any stragglers.