Low and slow. OR Super high, then turn the oven off. I flip the birds breast down at first and cover completely with foil, then flip them last hour or so for a crispy skin. Keeps the breast from getting dried out. Also, butter. Tons of butter, placed between skin and meat.
Never removed the backbone before, though, and I'm not cooking a turkey this year because I couldn't find a small enough one. I'm sure Zander would have loved that method.
If you like super crunchy skin, baste with coconut milk/oil/however you like it. Caramelizes the skin to sweet crunchy perfection, creates a barrier and seals in the moisture in the breast and meat. Mmmm. You can do that on pigs, too.