Side Net Extensions (Spornia Golf Nets Only)

The Side Net Extensions are a wonderful addition to my Spornia Golf Net. Once in a while I'll misfit a shot and the Side Net Extensions are great at catching those flyers. The Extensions are easy to attach with the hook and pile straps. I highly recommend the Side Net Extensions.

Side Net Extensions (Spornia Golf Nets Only)

The side nets are easy to set up, though instructions could be more specific on exactly how.
A video showing rapid stowage of the whole system into the carry bag including side nets and top extension would help

The net extension is a great accessory. Very easy to Install.

I think I attached the side net extensions correctly, but the video was too short to see what they should look like at the end. The close-up was nice, but when you're done how should they appear? My net is on concrete, so I have the tail ends being held by bricks.
When I have the sides stretched out they are not taut, and are kind of flimsy. Not the material, the material is fine. It's the engineering, or, I did a poor job of attaching and setting them up. I was hoping for maybe something like the roof extension. That works great, very stable, stays in place.
If anyone has any suggestions for my sides I'd love to hear it.