The uni-knot splice is the same exact knot as a nail-less nail knot. It has the same application and outcome. But the uni-knot splice and the uni-knot normally used in other areas is entirely different. Therefore the plan uni-knot (not the uni-knot splice used to connect fly line to leader) is an entirely different knot than the nail knot.

I think a lot of confusion comes from the name uni-knot. There are many different applications and even different ways of tying a uni-knot. Technically, I think the uni-knot splice should have a different name than the regular uni-knot.

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