I found this on Pinterest a while back. Supposedly it is bear proof. At the very least it looks pretty cool. We had a black bear wandering around last summer just east of Rochester. It was spotted about 2 miles from my house but thankfully wasn't a problem.
http://2.bp.blogspot.com/_wmEjJKtJYHs/TSY-AmR_OcI/AAAAAAAADXc/yfCXMjpW05A/s1600/003-lo-res.jpg
edited to add the link. lol. I must have been tired!
now that is the only hoop coop I would EVER use. That is FANTASTIC!
I love the frame but I don't like the chicken wire inside as the only wire deterrent, I would rather use hardware cloth.
I know I don't on my current hoop coop but its surrounded by electric netting and I don't have bears or weasels here either.