Snelling?

[Finprof]

A simple tool called the Tie-Fast tool can help you snell a hook in half the time.
It is actually a nail knot tool and is the only tool I ever ran across that helps to make an easy nail knot for attaching a leader to a fly line.
A version comes with clippers and a jig eye cleaner that has more general uses.
It is so easy to snell a hook with this thing that even an old guy with shaky hands and bad eyes can do it.