spottedwolf any head that your accurate with will work for you. Nothing special required, just make sure your accurate with it. a turkey has a lot smaller vital area then a deer, so accuracy is more important. I would also recomend the use of an arrow arrestor of some kind to stop the arrow from a pass through. This will also transfer the complete KE from the arrow into the bird (will actually move the bird on contact). All of this will help recover the bird, limits the ability of running or flying. I personally like and use the Zwicky Scropio arrow arrestor, but there are others out there that can be used as well.

The gobbler guillotine has its place, but I personally do not like it, again that is my opinion. It is for head or neck shots only. I have actually seen the head on a video bounce off the neck of a turkey (the company promo video) with no penertration. Got the turkey but if it would not penertrate the neck, I would not trust it to penertrate the body. I also think that trying to shoot at a bobbing head is more difficult then taking the body shots.

Good luck and enjoy.