Well, as a pro golfer who has studied golf for as long as I can remember, one of the worst flaws in golf is hitting the golf ball with your hands from the top. The best way to solve over-the-top slice/hooks is to start your downswing with your lower body.
I have outlined the details on how to start your downswing with the lower body plus a simple exercise you can do to ingrain this golf technique over at my golf blog.
Check it out as it can potentially turn you from