In the women's modified I do, the hand/arm cannot go back above the shoulder, and the hips and shoulders have to be squared to the plate on the delivery. The body can't be sideways. These rules are fairly easy to follow and enforce, and no one is able to throw too hard.
Whether this covers the definition of slingshot, I do not know.
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greymule
More whiskey—and fresh horses for my men!
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