I'd very suprised if your impact would go off on a regular basis outdoor. The whole concept is that you need a hard surface to make it work.
I play indoor only but you have to follow multiple rules because that thing is lethal if you yeet it. 🤣
Under arm, defo below waist height, no yeet, preferably you check xy corner/room/etc. before you post it so you don't injure anyone. It's really limited how you can use it even indoor let alone outdoor when you can have massive distances.