How To Attach A Leader to a Fly Line Loop

Making loops, Global FlyFisher

Flouro leader that doesnt have a perfection loop The North American Fly Fishing Forum - sponsored by Thomas Turner

Ed Shenk's The Letort Hopper

Best Fly Fishing Knots You Should Know - Fly Fisherman

Fly Fishing Knots, Loops, And Connections

Spider Hitch Knot Review [Easiest Way To Tie + Strength Test]

Fly Fishing - Line to Leader Loop Connection

Best Fly Fishing Knots You Should Know - Fly Fisherman

Easiest Line to Leader Knots

Loop to loop is bad - Try attaching your leader to the fly line this way - Troutbitten