I just heard about a new training aid on the market called the railer. Does anyone have any experience with this device? It looks to me like a solid trainer. What do you think. therailer.com
Whilst some view the putting stroke can be straight back and through, many prefer to let the arc just happen - myself included
The problem with this railer is it defining the arc whereas the arc is a RESULT, not a cause, and is defined by a variety of set up things such as shoulder plane, distance from the ball, length of putter pendulum (whether real as in belly putting or virtual as in std putting)
When you train a movement which is a result there is a great danger in becoming fixated by path-arc-positions - Anything which gets in the way of trust is counter productive in putting
Therefore,IMHO, whilst the putting stroke should be viewed as an arc - I would not recommend this aid
It would be far more productive to use drills which work for trust not against