I went out to help my wife get some fencing up recently. We have 3 pastures that are fenced off with various materials, one of which has a natural horse track. This is a 12-15ft wide track circling the pasture that should help to get the horses moving more often. It seems to work since not much grows on the track, but that's a topic for another day.
We bought some posts and ribbon to build another track on the second pasture, but first we needed to cover the barbed wire along one side. Our plan was to take down the barbed wire and install a mesh fence instead (and electrical wire), but somewhere along the way my wife decided we didn't need to take the barned wire down and we could clip the new stuff over top. Made sense to me, so we headed out there one Saturday with that in mind.
My wife had done the calculations, 29 posts, estimating 8-10 ft apart, and had purchased 330' of mesh. That would have been fine if the posts were that far apart. I think some were 14ft, and some maybe 16', but in either case, it meant we were fairly short. Not a big deal, and I was tired when we ran out of wire.
You see me wife is also trying to train horses, and while she is happy to do chores, they seem to have a lower priority than playing with horses. In this case, they had a lower priority than her helping her sister play with horses, so when we were about half done with the roll, she went back to see if she could help her sister. Not a big deal as I could have stopped and waited, but it was getting later, the sun going down and insects likely waiting up. Plus I have a bit of OCD and hate to leave something undone. If I had lost the momentum that day, it might have been a week or two for me to get it back up and go out there again.
So I wrestled the slightly smaller, but still large and heavy roll along, clipping mesh to the t-posts as I went.
330' of fencing up, excluding posts, makes a good day of work.