Those things actually work quite well. I started out with a "hand flinger" ~55yr ago.  Cocked it, dropped in one or two clays and then swing it side-arm. Also worked quite well. Not like a motor-driven trap, but good practice.
__________________
Glenn...
Canton Reference 9 Clearaudio SM Pro Focal Bathys JLA 10" Dominion Kuzma Stabi S w/MC & MM Magnepan 1,7i McIntosh MA8950 & MR88 Oppo 203 Roon Nucleus Rose Hifi RS150B Shunyata Gemini-4 Sony ST-A6B, TA-F6B, ST-J75 & PS-X75 Sorane SA1.2 & TA-1L Stillpoints LP1v2 WW Pt, Au & Ag
|