I got out and used my sling. It's not a good sling - just made out of paracord and scrap canvas - but it's a sling for tennis balls. I'm using the nerf balls used in their dog ball throwing contraptions, annnd I lost a ball. But I got all the balls zipping in the same direction.

The paracord is way too thick and heavy. Might make for a good bola, that's on my list of fun projects for the near future.

If it wasn't for the heat, humidity and the thunderstorm rolling in, I'd be out there till I lost all my balls.

I'm addicted.

    My daughter and late wife always considered my obsession with slinging a form of insanity.  Some people get it, some never will.

"Who lives without madness is not so wise that he believes."
Chinese proverb.

Welcome to the enthusiasts.