Intellect Enabled wrote:
snip
Question: is it best just to go ahead and use the nail knot (which is
working fine) or is there some reason to learn to tie this loop to
line? ...

Some folks nail knot a piece of mono the same size as the butt end
of the tippet to the fly line and then tie a small perfection loop
in it. (Google "perfection loop" for instructions.)

I used to use this loop-to-loop method for attaching leader to fly
line mainly because it's easier to change a loop-to-loop than tie
a new nail knot.

I don't bother with it anymore. I almost always get a full season
out of a leader nail knotted directly to the fly line so the
convenience of the loops is negligible and the nail knot passes
through the guides better than the loops.

--
Ken Fortenberry