Holy crap that loop knot is stupid simple to tie.
I had bad luck with lots of missed takes using a loop knot last year, so I stayed away from them, but I think I will try again, since it does give any fly more action in the water. And being that simple, rerigging should take less time now too!
You know... it is a simple knot to tie, which beg the question, why doesn't Brian Chan know how to tie it correctly? I just watched the video in the link posted above and it Brian is not tying the knot correctly, which actually affects the strength and effectiveness of the knot. Fishing legend Lefty Kreh's version of this knot, which retains almost the full line testing strength, (so much so, that the line itself actually fails before the knot does, snapping where the line contacts the eye of the hook, rather than in the knot itself) is different than that shown by Brian in the video. The difference between Lefty's knot and Brian's version is two fold...first, the number of wraps you make is dependent on the line diameter (7 turns for 6 pound test or lower, 5 turns for 8-12 pound test, 4 turns for 15-40 pound, 3 turns for 50-60 pounds, and only 2 turns for greater than 60); second, in Brian's knot, he fails to pass the tag end through the overhand knot
before wrapping. In Lefty's version (and also the similar Rapala knot), after making the over hand knot and passing the end through the eye of the hook, you are supposed to pass the end through the overhand knot, make your wraps (again the number of wraps depends on the line size), and then pass the tag end
back through the overhand knot (it is important that you do this from the same side of the knot that it came out of so that the line ends up pointing back at the hook (
NOT at 90 degrees as suggested by Brian, which is actually a sign that you did
not tie the knot correctly). In fact, Lefty claimed that one of the advantages of this knot is that the tag end is pointing towards the hook so it is less likely to catch grass and weeds on the retrieve).
For a correct demo of this knot check out this link:
http://www.flyfishingtraditions.com/techniques/tips/nuts-and-bolts/lefty-krehs-loop-knot