Train Eye Golf Putting Trainer The Traineye helps develop the long term muscle memory you need to putt like the pros. WIth a proper alignment over the ball you will inherently swing the club in a similar manner as a child swings on a swing set and this is the proper. We compare between the swing of a swing set and the swinging motion of the club during your stroke to help you visualise the proper motion of a putting stroke. This motion takes the arc out of your swing and puts your stroke directly in line with the hole. So there it is. Simple isn't't it.