Here's an interesting question. The topic is slingshot, releases, or release aids, and whether or not they are helpful and whether or not they are cheating.
The answer is fairly straightforward. If a release aid helps you get more out of your slingshot shooting, enjoy it more, and feel more fulfilled, then we hardly recommend you stick with it. Slingshot shooting is all about developing a skill and having loads of fun doing it, so if it helps, go for it.
As far as the cheating question goes, it would definitely be considered in an official tournament. WSA rules say that you cannot use anything but your fingers when shooting. So, if you want to compete, do not rely on any kind of aid. But if it helps, you have more fun, have fun.