I have been looking at Don Trahan's free 10 videos. Today's lesson was don't cock your lead wrist during the backswing. That way if you set up with the lead wrist flat it will still be flat at the top. Of course I am not sure how this could be possible??? If you look at DJ'swing:
It sure looks like he is cocking his lead wrist on the takeaway and it looks a lot like the wrist is cupped a little bit at the top. How does it look to you?