THE BEST TRAINING aid to stop you from coming over the top and slicing your ball! . By placing an alignment stick over the centre of your ball it stops you from being able to swing through on a path that is outside of the ball to target line without hitting the rod . The only draw back is that you have to also take the club away on the inside which isn’t usually the desired method . I think if you’re struggling with a slice tho then this is definitely going to help and you can use it with driver