Thanks for the fence wire advice but, yes been there done that. Always keep a spare set of fingers in the workshop just in case. The other caution is unrolling the wire down the driveway to cut a 60 or 70 ft length. You put a heavy weight on one end and then start pushing the roll down the driveway. If that weight comes off the end when you're down the other end of the driveway with the main roll - look out!!
The fun part is using trees as post and threading the fence through the forest to take advantage of as many trees as possible. Its not like putting a fence around a field where everything is straight lines.