A common technique recommended by Cook's Illustrated and others to achieve better skin over breast meat is to use a skewer to poke 4-5 holes in the skin. This allows fat to render and escape from under the skin.
Today I smoked an after-Thanksgiving Butterball turkey and noticed that they'd done the work for me. There are three small slits in the skin over each breast. I'd never noticed this before...I wonder when they started doing this?