I support this training. 2 things to try (use a 7 or 8 iron) - 1. Put the ball more in the back on your stance and 2. Place a tee about a yard out in front of the ball but just to the toe of the iron, far enough that you won't hit it on your downswing. As you come down with the swing try and imagine trying to hit the tee with the ball/club on contact.
Just a couple of things I do when I'm working on a draw or straightening out my slice.
Good advice Nathan. I will take this to the range today as well