This has to be one of the easiest knots to tie. If you can't do this double blindfolded something is wrong
I came across this knot years ago while looking for an easy to tie, small profile knot when using "heavy" line (20lb) to flies and it has worked well.. I don't know of any other knot with such a small profile, especially this strong, and again...easy as heck to tie!
I will say, I have not found it to work well with small diameter line and tend to use it with 10lb+ but really find it excels when I get to the heavier stiff lines 16-20lb+. The ultra low profile and strength makes it my go-to for larger diameter lines
It also works for braided lines, a single knot to do it all for attaching heavy line to flies!
Here's a short video showing how to tie it.
Here is a pic for those who don' tlike videos:
(@Ard , the link in the OP takes you to the forum home page, not to a knot page)