In my younger days I took quite a few birds in fullstrut and since then find that I enjoy eating shot free meat much better.A sharp putt often times will make them raise there head out of strut,but I have also had them spook to it too.Often times now I'll shoot when I make the bird gobble as is head and neck expose themselves as he exhales to gobble!Sometimes it seems like with some birds its almost impossible to get them out of strut,and they get in so close its either shoot or spook them and if you do shoot at a tom in fullstrut I would recommend shooting them at an angle where the bird is facing left or right of you or when he's quartering you still facing you coming in.A straight on shot when in full strut is a compact target and belive me as Maytom mentioned you'll take out plenty of good eats by taking this shot!

Bob
Monarch isn't a butterfly it's the King of the Spring!