Barring hogs ?

When I see people on here that catch a lot of barrs my first thought is wow, someone is cutting a ton of hogs around there. Clint that used to be on here all the time is probably the all time barr catcher and the country he hunted in had plenty of hunting going on and I dont believe a boar was cought or trapped over there that wasnt cut. I don't know what the numbers are but to catch them with any consistancy you have to cut a lot of them in an area where they have plenty of food and water for them to stick around at all. Some of the guys in Lousiana that talked about it years ago would build a big pen in the woods they hunted. They would keep those cut barrs in that pen for lets say 30 days and feed them and then just open the gate one day and they say those hogs would always stay within a reasonable distance. Almost like a calf mothering up in a set of pens, its just home from then on. I've turned plenty of hogs (not just barrs) loose and while I may see relatives or off spring I dont often see the actual hog that was released.