I've found that for horses, I use the OK Max-tight 48" tall woven with the 2x4 rectangles. I do welded pipe corners and a welded support at 195' (using 200' rolls of fencing). My welded support is 2 poles set 4' apart with a top and bottom welded pipe rail. My woven roll of wire terminates at the first support pole, the next roll of wire starts on the second support pole, so the support is pulled equally on both ends. I fill in the support (between the poles and the top and bottom rail) by welding a handi-panel that's cut to size.
I set the bottom of the woven about 1"- 2" off the ground with a smooth twisted wire tensioned with a load spring. I also run a smooth twisted wire with a load spring at the top of the woven wire. I hog ring the top and bottom of the woven to the smooth wire in 2 places between each pole. The bottom tensioned wire prevents coyotes and pets from pushing under the fence. The top wire just makes the fence look better.
Here's the key, I run a third smooth twisted wire with a load spring about 4 inches above the top of the fence. This makes the overall fence height 52- 54" and it seems to be too tall for the coyotes to want to jump it. I've also noticed that horses don't like leaning against things with their necks as they try to reach over a fence. At 48", it lines up closer to their chest and shoulders and they'll push against it all day, trying to get grass on the other side. At 52- 54", they don't bother. The tensioned wire also provides some protection from falling branches and if the horses do lean against it, it springs back up and prevents the top of the woven wire from getting bent over between poles.
Regarding poles, I do a T-pole every 10' and every 5th pole is a galvanized 2 3/8" line pole. This gives it enough rigidity that the horses or cows can't bend the t-poles over.
