I'm always fascinated by the gadgets some people come up with to make the simple complicated.
Here's a prime example.
As always, I wonder how many of these they sold.
Hey, right hand only!
From the October 1977 issue of American Archer magazine.

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That one must have come and gone very quickly. I've been at this more than 65 years and have never seen it or an ad for it.
Looks like a pre-runner to the modern drop away rests on compounds.