You're right, Dave. They give me more fits than anything else I've ever hunted except bush pigs. I do have to admit that I tend to be a turkey magnet. I've been extremely lucky seeing them and taking them. In 60 years of hunting my success rate is around 90-95%.
I've noticed that a turkey's major weakness when seeing something that's out of place is a 5-10 second pause before they become a ghost. Be quick, take advantage of that, and your success rate will rapidly climb.