[vj]

The Putting Arc is a good tool for the right arm stroke, notice I said good. The plane angle of the putting arc runs from the sweet spot of the putter THROUGH the right shoulder (thorasic area of the spine) and the plane is called by MR. Kelley the LEFT SHOULDER PLANE with its designation of X in the 3rd Edition.

The push basic stroke will travel on the ELBOW PLANE which is flatter than the LEFT SHOULDER PLANE. This means the the projection of this flatter plane angle on the ground will result in curvature in the arc of approach and arc of seperatiion. The difference in these two planes ranges from 5 to 8 degrees usually. This will not create an enormous diffence, possibly one in which we cannot even feel, however there is a difference.

Bushnell,and Golfjustlikethepros.com both have lasers you can attach to your putter for tracing a straight line. They attach to the shaft and throw a line of laser light to the ground. That is really good. Also you can use the side of a bench or pvc to move the shaft along and it will teach you this feel.