Hey BillS, I’ve built two chicken-run hoop enclosures butted up to the former garden shed, now chicken house. Needed the top coverage for the hawks and owls protection. I made mine 8 feet wide, ending up ~6 feet+ in the center. Four panels side to side long. As a chicken preditor protector I ditched in the lower edges 12 inches on the sides. One is covered with soldered wire 1/2"x2" mesh. Expensive but stiffned up well! The other covered with 1" woven chicken wire. Pita to hog-ring all of that floppily mesh. And a bit wobbly assembly.
How you do the ends will determine the overall rigidity of the unit.
For me it was two long T-posts pounded in and wired on to form the doors frames. Filled out to the edges with cut down 1/2"x2" soldered jointed panels. The cut ends; one by one wrapped around the end cattle panel hoop rod.
I used a lot of tempered electrical fencing wire as joints wrapping on the one.
The other I used 8" aluminum chain-link fencing stays as joints wrapping. MUCH easier.
Yes. And has done fine with up to 24" of wet heavy PNW snow loading.
Green house most just plywood the ends.
I needed to be able to see-trough. Shoot through for lurking coyotes.
tree-farmer Steve unruh