stik with wire ,,. I always done real good with one wire keeping the sows in, trouble was I never could get them to cross were a wire once was , so keep a gate they can rub on and trust for moving them tothe next location ,.,the cows mite jump over but the hogs were easy to keep , but the sows occasionally would get out ,, but were easy sukers for a feed bucket and the sound of a stick banging on it , ,, I had 25 sows with about 10 cows in those days on about 15 acres of clover and orchard grass ,,. in the winter they got an additional 25 acres of crop land foraging to roam over,. always rotate pastures too ,.always gave them daily rations cows too ,mostly farrowed outside, used the warm farowing house from thanksgiving til easter. catching pigs was easy enuf ,feed thesows in the barn with a lower board missing , after 24 hours all the pigswill be in with the mommas I wouldset a sheet of plywood over the hole , then turn the mammas loose ,, it was at best a 2 person job,.. and yes hogs will kill a woods if you want it all to come down ,, in 10 yrs most everytree will be dead or d ying ,,. one other note ,, when I came here 30 yrs ago the gravel road was 12 ft at best and had grass growing in the middle in places ,I had few neighbors and all understood country living and livestock running at large occasionally ,, it was no big deal lest they got in someones garden ,, now the deer do FAR more damage if you do not fence your garden ,, now that county road is now 22 ft wide and paved,.folx will go 70 mph on the straight away where my pigs used to cross over to play in the old abandoned apple orchard that is now long gone ,.. son I could not farm like I did here as a young man ,,. times have changed in these parts