I thought I would mention Something a bit simpler. Heavy duty fishing line. The clear stuff. I live in an area that has a huge (huge)mule deer problem. They not only will eat everything in sight but they will attack and maime you, your dog or your kids. I couldn't afford ten foot fences.
I found this blog:
http://vomitingchicken.com/deer-fencing-cheap-and-easy-and-effective/
Basically you hang fishing line at varying heights, according to your deer size. When the deer bump it, they spook. Because they can't see it, they won't jump it. Needs regular maintenance. However it has kept the monster mules out of my Saskatoon berry orchard.