interesting reading all of these thoughts. i have to admit that when i got started fly fishing, when dirt was young, i read everything that i could find, bowed at the alter of the scribes who obviously knew more than i ever could, and eventually tried all of the techniques they wrote about with so much passion.
- needle knot, yep, tough to pull off cleanly but seems to work, kind of the analists approach to setting things up
- whipped finish, worked fine until in went in the salt and poof came apart and i could never master keeping that finish small in diameter and length
- hollow dacron with loop, chinese connection to flyline with whip finish, clunky but it worked great on BIG fish (tarpon and such)
- nail knot each and every leader to your fly line, works just fine and if trout are your primary target, why do anything different?
- short chunk of stiff mono nail knoted to fly line, head or whatever, with surgeons loop, fast stable, easy to add or change leaders when your hands are blue, yep, simple, efficient and my standard for a couple of decades now. only change, UVknot instead of plyobond.
try'um all, you will hit on somthing that makes sense for you and your specific needs.