For field points, bag targets are the way to go. Ive had mine for 4 yaers now and changed the bag once cause the targets were really faded and some of the stuffing had moved over and wouldnt stop. Go to a feed store and get some burlap bags(like what everyone else has said), Then just stuff it with old wal-mart bags or t-shirts and stuff like that. When u get ready to shoot broadheads, just buy a cheap foam target.