I haven't had nearly the luck that some of the other posters here have had. Messed up air cells have been the bane of my existence. (Seriously, my life is pretty good otherwise!) Last year I spent some serious money on hatching eggs. Like my husband says, "lessons cost money. Good lessons are usually expensive."
I think there is more to it than "laying it this way", "turning it" or "not....." The health of the parents (quality of the egg), the age of the egg, etc. I had one breeder who told me to hatch them in a carton, no turning at all. I have to wonder how he managed to keep his humidity high enough. Thankfully there were only 4 eggs lost in that debacle.
Kudos to you who have had success!
A warning that I may have missed on this thread (I didn't see it as I was reading through) is "find a way to protect the other eggs in case the egg(s) spoil."
I had one blow up all over my incubator (and the turner).
I had a whole shipment that had rolling air sacks in a separate incubator, just to see give them a chance. I had actually candled all of them the night before. I was fairly new to the whole process and tired at the time too, so I don't know if I missed something important when I checked the egg, but..... Bacteria is a bad thing and can wreak havoc on the rest of the eggs in the incubator.
I wish you the best of luck!