We are actually trying one out first this weekend to see if we can do it. It will be thoroughly thawed, we will pre-measure the amount of oil required, it will be cooked outside, etc. We've watched Alton Brown's video on how to do it a few times.
Anything else to share?
P.S. If it works and we decide to do it for Thanksgiving dinner, I'm going to get some turkey legs/wings and roast them first in order to make stock/broth in order to make gravy. There are no drippings when you deep-fry a turkey!