Well, I am a slicer and right off it made me aware my backswing was too "inside" and I was rushing my backswing. It kinda forces me to go low and slow and more straight back with the club, I haven't had much time practicing with it. I still slice...but in my opinion this will help with coming over the top and staying on plane. Don't ask if I'm a 1 or 2 planer...i'm unclear of the difference but from my understanding of the 2 I'm a 2 planer. I've only used with my gap wedge to hit about 30 balls towards my practice green(which isn't growing)...I want to go out to range and hit a few full speed swings with my driver, because the big dog is the one that always runs em to the woods or adjacent fairway.