I have a Double Bull Blind that the poles began to poke through the bottom where the material comes in contact with the ground (that surprised me since it was a Double Bull). They of course said to send it back and they would repair it, but the shipping was quite high. I ended up taking it to a local place that makes awnings.They also make custom boat/pontoon seat covers. They repaired it with a material I doubt could ever be penetrated by the poles. Cost me $35 bucks to reinforce all the corners...a steal in my opinion.