We are building a new (larger! chicken math!!) coop and run. Our old run was 100 sq. ft. and covered with welded wire. Our new one will be closer to 800 sq. ft. We were plannign to cover it with welded wire as well, but in the last couple days I've been reading about some type of netting people use over their runs. What kind of netting is this? How secure is it? We lost my son's favorite hen to a hawk last winter so we definitely need a secure run, but netting would be so much easier to get up and stay up. Thanks for any info!