Finally added a hoop roof to my 8x8 pen out back. Before PVC - 6 pieces of 1/2" @ 10' long each Frame is up Tarp is on I got a 10x12 tarp, but really needed an 8x10. Will get a new one and swap it out. The pen was originally 4 feet tall........and I added 2 more feet of hardware cloth last year to make it 6 feet. However, I can now remove that top 2 feet as the hoop top makes it about 7 feet tall at the peak. Cost? I think the PVC was $1.10 for a 10 foot stick @ Home Depot x 6 = $6.60 Tarp was $9.99 @ TSC Total Cost: less than $20 and took less than an hour to build. It will be a little prettier once I swap tarps out. But it is functional!