If you're talking about pin-CG distances (vs pin-PAP distances):
Longer pins take longer to go through the skid/hook/roll cycle.
Shorter pins go thru the cycle quicker.
Longer pins usually make for more versatile drilling options.
Shorter pins make for less versatile drilling options.
Middling pins, 2-3" and 3-4", you can do a lot with.
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