The Parametric Wall Clamp was just what I needed with the exception that I wanted to mount it with Command Strips instead of screws. Thankfully, the original author provided a Fusion360 file, so I was able to add the tabs for mounting the strips.
Perfect solution for mounting my old-school slingshot (long story)!
Hopefully, you will have some use for it as well.
If you want to mount with just a screw, just suppress the last two extrude features in Fusion 360 or download the original model.
The author remixed this model.
Added parameter driven mounting tabs above and below clamp for Command Strip mounting to wall.