CGC has one with a tube, you have to shoot into the curved tube to hit the kill... or you can hit the plate. But because the tube is the same size as the kill, you can't hit the plate if you miss the tube, and you can't hit the kill if you miss the plate. Everything that surrounds the target is wood... so it's really obvious when you get a 0.
It would be great to have a junk yard target course one day.
Another CGC member built a target where the target faces away from you, you have to shoot a tiny reducer which leads to a u shaped tube and fires the pellet around the back of the target and into the kill, and then it falls over towards you. When we're feeling really nasty, we paint the target so it looks like it's facing you, and you then have to discover where the hole is to actually shoot.
BFTA/NSRA County Coach
CSFTA Chairman/BFTA Rep