I was a soccer goalie, I got so I could catch the crap out of them and fling them at shoe laces or heads. Before middle school, I just remember the sting, smell and twang they made on impact.
I googled it after I posted. No luck, guess it was a local thing lol. Basically it was similar to dodgeball. You would take 6 bowling pins(ducks) and set them up in a pattern at the free throw line circle(pond) in the gym. You'd have 2 teams of 5 trying to knock all the opponents ducks down. Only had 3 or 4 balls total. So long ago, 37-39 years, can't recall all of the specifics.