Originally posted by: CubicZirconia
I've never used one. And I know you didn't ask for advice, but I'm going to give you a tip that I wish someone would have given me the day I started golfing.
DO NOT SWING OVER THE TOP. IF YOU SWING OVER THE TOP YOU WILL SLICE, AND YOU WILL SLICE BAD.
Your swing must come from the inside. If it doesn't you'll be inconsistant and you won't have any power. If you really work on coming from the inside you won't need any wacky swing gadgets.
Simplified diagram demonstrating proper divot patterns
Those are exaggerations- but it gives you the general idea. It also assumes you are right handed.