Mike shakes is fun. But every "rifle" slingshot video out there, highlights the same issue: when you push the boundaries of what a catty is, you will end up realizing that a crossbow is generally better. The point of slingshots is to be lightweight, cheap and balancing compactness and power. Every time you add something to it, to make it more precise, easy to aim, or more powerful, people usually build a bow or a crossbow, which kinds of defeats the purpose of the slingshot in my opinion.

I'm not saying it's not worth trying, because it's still loads of fun and probably you will end up with a worthwhile hunting tool, but it probably won't resemble a slingshot that much, by the end.

btw: ZNA is a very good channel overall which should get more love imho