Bad eyes and bad fingers make them little flies a real pain. I take a variety of pre-tied with me, but sometimes you gotta tie one in the middle of the river. I resort to the Buzz Bomb knot. you tie an overhand knot near the end of the tippet... after threading the fly of course. Then tie a 2 turn clinch knot, making sure that overhand knot is through the loop before you cinch it. Of course a 2 turn knot slips, but only until the over hand knot stops it. Its a fairly strong, quick knot courtesy of the hardware flingers. I've hauled in steelhead up to 20 pounds and Chinook to about 40 pounds with it.

Larry