for the holding box use 4 pieces of thick plywood, and 4 tee posts, and make drop doors using scrap 2x6s as the guides. make the pen round. 6 ft t-posts every 8 foot and 2ft deep. cattle pannel for the walls. each t-post needs something to hold a 2ft peice of cattle pannel at a 45 degree angle to keep the hogs from jumping out. this design will get beat up a little but it works. i keep a catch dog on stand by.
or the the elcheapo method.... a rope, a tree, and a hog
