Our BO is a commercial goat breeder, who just rents us pasture space. We rotate the grazing between species, because the goats eat things like stinging nettles and burdock that the horses don't touch, and it's easier than mowing. Our "gates" are the metal pannels you use to make a round pen, and the goats slide right through and go exploring. Her hubby welded co-rod onto some, to narrow the spaces, and they climb it like a ladder (really quite funny to watch, since they're not my goats). I'd think mesh might work better. They don't climb the mesh pannels, because they're not stable like the co-rod is.
For your hubby: when you find a patch with your ankle (happening to me a lot this year) DO NOT under any circumstances touch your skin. Go directly to the nearest water source and rinse for about 5 minutes, and then just let it air dry. Our water comes up only a few degrees above freezing, and I'm sure the numbing effect helps too, but this way I've had minimal or no rash. Also, if you react anyways, Corona ointment under a bandage and left alone for about a week works wonders!
photo by FallingForNova
RIP my beautiful girl -- April 4 2002 - August 21, 2012