Archway Putting expands the usefulness of your alignment rods. Insert one alignment rod into the adjustable arm (height adjustment based on your putter) and a second down the middle to help aim the two arches toward the hole. Make your putting stroke trying to keep your putter shaft along the upper alignment rod and roll the ball through the front arch. When you can keep the putter on the alignment rod and roll the ball through the arch, you will have perfected your putters path and learned to square the face perfectly to that path. In other words you will start every putt on your intended line perfectly!