I've been trying to solo my way through the (group) quests in Shadowmoon Valley on my frost DK since he was lvl 69; as an alternative to yet-another run through northrend, my end goal was to unlock the Netherwing dailies and also obtain the end chain gear for transmogs...
Although I'd had some break throughs here and there, I was still stuck on Zuluhed and Vhel'kur as of lvl 73. My gear was very basic - probably a 2:1 mix of (ilvl 138+) greens:blues, e.g. modest by wotlk standards but pretty good for what TBC was balanced for... but still not quite there yet.
So I took a break and leveled my DK's blacksmithing all the way up to 397, upgraded a few pieces of his tank set with +dodge cobalts (despite being a DPS spec, I've found blood presence + tank set invaluable for tough solo fights), and tried again.
As I'd at least come pretty close vs Vhel'kur the last time (despite being required to de-equip my helm to see him...) I thought I might juuust be able to handle him, but wasn't hoping for more than that. Well he went down fairly easily this time - not a cakewalk but not a nailbiter either. W00T!
So then I figured, why not try Zuluhed one more time before I push for 74? Once more, things went considerably better, I remembered to stay away from his summoned demons, and finally took him out. As I was standing there waiting for my heart rate to slow back down, a regular orc shammy came charging down the stairs and got himself a Bruce Lee backhand for his trouble. ^ ^
Amazing what an extra 100-150 dodge can do, apparently.
EDIT: not sure if this belongs here, but shortly after unlocking the netherwing dailies I also completed the Dragonmaw "top gun" flying quest chain and got the "Skyshattered" achievement. I remember struggling with this back in TBC on another toon - back then, getting hit by the enemy airbursts meant you were dismounted and had to restart (and usually also died), and I was never able to finish the last NPC.
However it looks like nowadays getting hit has no effect. As far as I could see it doesn't even do dmg. I know they did something like that with the bombing run dailies, but at least with those I seem to recall that they inflicted a small amount of dmg. Meaning all the effort I put into dodging airbursts was pointless (?), and all I really needed to worry about was simply staying near the NPC...
That said, I can see why they did it - like the brewfest barrel runs, being recognized for doing the correct moves could be maddeningly lag/glitch-dependant even on a fast connection, and sometimes an airburst would simply materialize right on top of you, so... yeah. I guess it's for the best. Even though I do still sometimes miss those "razor's edge" achievements.
EDIT 2: Ok so
that's how long it's been since TBC... looks like the airburst "dismount" effect was changed to a minor slowing effect
back in 3.3 
Feels good man.
.
