technically you are not thinking in the swing it is time to snap the wrist though impact, but that has to happen to get the extra distances, but you are thinking let it snap through out the swing. So what I do is think before I hit the ball that I wont to snap through the ball, and then do a few slow practice swings filling that natural snap. Then I swing at the ball keeping a light grip so that I snap through the ball. If you keep your wrist in a loose grip not to loose but not tight (you should be holding the club not squeezing it), and if you do that you wont have to think snap in your swing it will happen, but while you are learning the swing you are going to have to think about it though out the swing to keep your self from not snapping though the ball..
Maybe I word it a little wrong but I was stating what was happening in the swing, but you do have to anticipate it happening and let it happen or it will not happen. I know how hard I was hitting it last may and I know how hard I am hitting it now. The swing really works.