The attachment points are spaced about 9 inches. There is no overlap in the side net and the main net. Only one edge of one net is secured. Both net edges need to be secured to create an overlap to contain a driven golf ball. I am very impressed with the quality and design of the hitting net, I just don't think the attachment of the side nets have been designed to contain a driven golf ball.
Fast service and great feedback from Edward Spornia.
Side Protection Nets (Attachment)