What are you using to build the run? I've had almost no luck with chicken wire on T-posts and U-posts. When stapled to a rigid wooden frame however, it's pretty simple to work with.
The framing for the run is 2x4 and 4 x 4 posts. It just keeps trying to roll back up on me, I can't get it to stay straight argh! I made it about 15' with it in 2 hours and gave up for the night. It'll probably be easier to do tomorrow when hubby's home to help.