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Fly Fishing Knots: Doubled Fly Line Loop Animation

The Doubled Fly Line Loop is used for making a permanent loop in either end of fly line. It's best in fly lines bigger than 7 weight as it is bulkier than a nail knot.
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See detailed instructions below for each step in tying the Doubled Fly Line Loop.
  1. Fold over the end of the fly line until about two inches overlap. Tie a speed nail knot using fine diameter nylon monofilament 1/2 inch from the end of the loop around both pieces of the fly line(.008' to .010" diameter monofilament works best). Trim both ends of the nail knot.
  2. Tie a second speed nail knot in the same manner one inch from the end of the fly line loop. Trim the ends.
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