Yes, I take it you are just trying to take the legs quickly.
You can then hang a leg to skin it or place it on a tailgate or bench.
You could literally remove a leg under 30seconds with a little practice.
If you are going to hang it to skin it you break down the whole carcass if you can carry it or position it near the vehicle.
I'm far from the fastest but it's easy to remove a leg or 2 once you get the feel for disjointing the ballpoint.
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