I know I've made a beautiful slingshot look somewhat tacky. I know it's not a valid way to aim a slingshot. I built it to see how much my hand wobbles under different conditions of band tension and grip style. There's comments on that in my blog post: How does draw strength affect accuracy.
The point of showing it here was some of you might like to see how I attached it ... and to give you all a good laugh, of course.