Try this, take your normal address, let your arms hang naturally with the grip resting in your left hand. When you grip you should see 2-3 knuckles of the left hand, assuming you are righthanded. Place your righthand on the club at about the same offset as your left, but do not rest your right thumb on top of the shaft. If you still have troubles with a hook, try adjusting your grip weaker, so you only see one knuckle at address. If this doesn't work get a lesson from a good teaching pro. Hope this helps.