I made a near life size target before my moose hunt. The method would work for a pig target - in fact, you've inspired me for the coming season. Used the heaviest cardboard I could find from a large shipping box and drew a moose outline (minus legs from the knees down) on it. After cutting out the form, I backed the kill zone with a large 3" thick piece of closed cell foam by gluing it with rubber cement. Then used spray paints to color it dark enough & to outline upper leg, shoulder, etc. to give it some depth. Finally, I screwed 6' 2"x2" boards fore & aft which I could drive into the ground and keep it upright. Practiced all summer on it, including broadheads, and passed it on to Steve Leffler (1 of our Tradgangers) before his moose hunt last Sept. Hope this helps. Have a pic someplace which I'll try to post. Best regards, Todd