I was on 1500 acres last year with 6 or 7 feeders and after the landowner turned a bunch of cattle loose on the place we learned quickly that we needed to fence off anything that we wanted to keep in one piece. They destroyed everything. I also learned that the pens had better be strong too because the same cattle would find the weak spots. I also learned that fence building is hard work, especially smack dab in the middle of the drought that turned clay into concrete. After helping me with one of them, the rancher informed me that his hired hands have nothing to fear from me.
I know that a hot wire will keep cattle away but it sounds like it may not be the best idea. My thought was that deer would just jump right over but sounds like it may serve to keep some off too. Looks like I'd better plan to get after building three more.
Many thanks to all of you who took the time to offer advice. THF is like a giant campfire with hundreds of years of collective wisdom and experience sitting around it. I've learned as much or more here than I had in all the years before I found y'all and saved a bunch of mistakes.