The oldest patent addressing the problem dated back to 1929. As he perfected the prototype, the design work was done by trial and error. Finding the right materials was a challenge within itself. We're still evolving it. There are changes to size, attachments, methods to ballast the base of it.
Every day is a challenge.
The years of work paid off with a product that assembles quickly and easily in about ten minutes and fits most basketball goals. Rolbak's main feature is its netting. Once the ball goes through or near the hoop it falls into the slanted net forcing the ball to roll back toward its shooter. Rolbak is made from ultraviolet protected materials that are mildew, fade and tear resistant. The base can be filled with sand or water, and the only tools required for set-up are a wrench, stepladder and a hose.