Thread: clay trap, correct way to throw doubles?

No alloy sheet on this at all. I noticed that the cheap units at hunting and fishing or guncity have a wider gap between the bast and the rubber lip that appears to allow 2 clays to stack on top of each other.
I really need to ask them in the shop if its designed for doubles or not, but the main difference between those and mine is that the gap on mine is only the width for a single clay.