On one of Jamie Oliver's "How to do Christmas" shows he shows various ways to cook turkey including Deep Frying, from memory it seemed like he had a large stockpot type pan on a heavy duty gas burner rather than a purpose built thing.
I also watched the Network Food Challange Thanksgiving competition where 2 teams out of 4 deep fried their turkey
The better bird (IMHO) came from a longer but lower temp than the team who cooked it at a slightly higher temp for a shorter time.
Low n Slow (ish) rules again.