I like to build hoop coops with cattle panel. Here's what I have learned:
1. When forming the hoop, tie the botton of the panel with a length of rope. Those things are springy, and will flatten you as well when they "unspring".
2. Shake out work gloves BEFORE putting them on. Brown recluse bites ain't much fun, and definately crimp your style. Stomping on gloves is also recommended...it softens them up and gets your blood pumping as well.
3. Locate at least three supply stores that handle j-clips, hog rings, and the tools needed to install them. The big building supply stores usually don't carry this stuff.
4. The tool you need will always be either just out of reach, or gone altogether.
John