Hi Cranfield ,thanks for you attention , maybe you are right and I should get a battery power operated flapper but I could not find out what kind of battery is shown on the picture .
Is it the same big thing use on the " pigeon magnet "stuff ?Anyway if I find one ,I would be interested in a "manual "flapper" also.
Also let me know your opinionn about how many flappers would be right among, ,say 20 shell decoys ....
Thanks