We do not have a screen house yet. We do have a 10x10 ez up canopy. Rather than buying a whole new screen house, I would prefer to put walls on the ez up. I have seen a lot of walls being sold on walmart and amazon, but they all go with specific canopies. I would think that I could just buy one of those and us it on our ez up canopy. Does this sound like a bad idea? Do the walls generally just velcroe around the poles supporting the canopy?