my wife will be doing one in the oven and i am cooking a breast on old #336. so i will be doing the turkey boulder made popular by our own mr squirt. take a bow my friend.
I deboned a turkey breast yesterday and tied it up and smoked it. I haven't sliced it yet but it seemed to hold together well. I'll put up some sliced pictures Tonight when I get home from work.
I don't brine; I don't care for the extra salt, plus IMO, if spatchcocking chicken or turkey it's just not needed.
And because of allergies I NEVER buy self-basting or injected turkeys (or chickens). I always buy poultry labeled "Fresh or Minimally Processed" because it isn't allowed to have been injected.
Now having said that, whenever I spatchcock as long as I pull the bird as soon as the thickest part of the breast reads 165° internal temp, and let it rest, they are incredibly moist every time. I try to put the legs toward the hotter part of the grill that way if they go over the 165° mark it's ok. I also like to use some kind of water pan inside the smoker to keep moisture levels up.
The other trick is to stick to a turkey that weighs no more than 14 lbs MAX! Any bigger and you start having trouble getting the inside to temp before the outside starts drying out.