You probably know that when hitting a ball that lies above the level of your feet, it will usually fly left with a draw or hook. That’s because your swing is extra-flat (horizontal) and shallow, paired with a more natural rolling of the forearms and hands as in a baseball swing.
Making practice swings against a slope is a good way to instill these characteristics into your regular swing – and a great way to fix a slice.
No need to hit a ball in this drill. In fact, you can try it during down-time in the course of a round:
Remember, a flatter swing will wipe out your slice.