Adjustable stocks may look the business, but they look indecisive and to my eye they are never as sweet as an unbroken piece of wood. Beyond that, my take on it is that regardless of the game (trap, skeet, clays), a person will by nature tend to do best with a particular stock set-up; some people naturally shoot flat guns well, some shoot high guns well. I have used adjustable stocks to arrive at dimensions that work for me, and then transfer those dimensions to nicer wood.