I just looked up how to make one with paracord. Personally I use something a bit thicker so that the pocket is bigger and can hold whatever you want (tennis ball, golf ball, fishing weight).

Slinging. Like David and Goliath, but I’m better with the over the shoulder method than the spin it in circles method. Based on discord and other sites, there are dozens of slingers worldwide.

Noooooooo, you just signed that right away! /s