Our club got a set of ZZ bird machines. They had some that they got and never worked. Today myself and 2 other friends went out and shot. I have only done this once, many years ago. It was a humbling experience today. I shot box birds pigeons some when I was in my 20s. In my opinion zzs are much harder. The flight pattern seems to me be more erratic. Harder to see. Smaller than pigeons. Could be my eyes were better in my 20s. Anyway I really had fun and will be doing it more often. I can see you can get get addicted to it.
Try it at least if you have the chance.
If you happen to come to Houston we can go out and shoot it. ( You have to pay your own way)
You will enjoy it.
John
Arrieta