Golf Digest did a short post about how Patrick Reed hits it so long. The post simply tells you to tee the ball higher -- but not too high, so you don't change how your swing bottoms out -- and aim a bit right (for a right-hander). Doesn't sound particularly impressive, does it?
But the really cool thing is the 16+ minute video interview with Patrick they posted on their Facebook page. (There are a lot of comments on it as well.)
Here's the video. Enjoy.