I had some requests to attempt to go into more detail on how I install my interior fencing system which I have been using for rotational grazing. It may be a somewhat unique approach to fencing but it works well for me so far.
I wanted a fence that was as invisible as possible for aesthetic reasons, easy to install, easy to repair, inexpensive, easy to reconfigure if necessary, and generally light and durable without being flimsy. After working with this fence for 2 years, I think it meets all these goals.
The fence consists of 5' rebar posts pounded in to "belly button height" (about 42" in my case), rod post insulators, 3 or 4 - 16 gauge high tensile wires, and a 26" tall woven wire around the perimeter. I get the rebar in 20' lengths from a local builders supply place and cut them into 5' lengths. The corner posts are made from various sized cedars from the farm unbraced and buried about 3'. To close off resting paddocks, I use wire gates with gate handles across the opening of a paddock. I use mini reels with nonconductive gate handle and clip on leads powering poly rope hanging on step in posts for paddock division. It is powered by a 24 joule mains charger with remote/fault finder and has six 8' ground rods spaced 8' apart as the grounding system. I haven't had a problem with lightning and run no lightning protection although it may be a good idea. I have a clip on flashing fence alarm which flashes red during a low voltage situation and can be easily seen from the house.
In my case, I installed swales which I wanted to fence larger animals out of. The video and pics below show how I did it. The same could be done for fencing animals out of newly planted tree lines for silvopasture and then easily reconfigured after the trees are established enough to benefit from animal impact. I was picky about installing my system "on contour" which in my area makes the fencing very curvy, again this is not a requirement or recommendation, just how I did it. It does, however, illustrate the amount of curve that can be easily achieved with this fencing system.
I have no affiliation with Kencove but they seem to have the best pricing and decent customer service so the parts list I provide is mostly going to be from there and is offered only as a help to readers trying to find gear.
Corner lags www.kencove.com/fence/Wood+Post+Insulators_detail_ILCE.php
26" woven wire www.kencove.com/fence/Hinge+Joint_detail_WH7-6.php
mini reels www.kencove.com/fence/Reels_detail_RMININ.php
non conductive handles
gate handles www.kencove.com/fence/Gate+Handles_detail_GRB.php
fence alarm www.kencove.com/fence/Fence+Monitors_detail_MFA.php