I have a Holy Pally, and I do ZF all the time. I guess being able to holy shock myself is what makes the difference, and my spell dmg is quite high, so consecration ticks for a lot. I always do mounted pulls, up to the first "room" for the first pull, and LOS them around some of the ruins. I usually start off with Avenging Wrath with my consecration, it does some nice burst dmg. I tried switching some prot gear in, and I just didn't do enough dmg. I also have the Skullflame Shield, with a spike, so I do extra dmg that way, and it heals me a bit too. Occasionally I will bubble heal, but I have to be just at the max xp range for it to be worth while, or scramble to run the alts out of the instance. Before it was gimped I used to do the trick of getting them really low, and zoning out, and then my hunter/pet does the last 2% for full xp, but it usually ended with the hunter dying...