Take the impact off the back of your nets with this 1/2 in. thick rubber mat suspended on a 1 5/8 in. frame. The mat is 6 ft. by 4 ft. and the frame is 7 ft. by 5 ft.
The grommets at the bottom allow you to pull back the mat at the bottom and secure the mat to the base of the frame. This forces the balls downward. Release the chains at the base and the mat also acts as a ball return!