There are plenty of western hackamores with shorter shanks/less leverage.

Beetle Hack

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Little S Hack

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Jim Warner Hack (this comes in two shank lengths, the shorter one is even shorter than english hack shanks)

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Shanked Sidepull (The name is so horribly incorrect but that's just what it's called)

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Bozo Hack

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Light Hack

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Another Light Hack

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image"Avoid loud and aggressive persons, they are vexations to the spirit." - Desiderata, Max Ehrman. 1926. image