This knot builds up the fisherman's line by forming a double line as it affixes itself to bigger hooks. This double line provides greater protection. For occasion, if one of your strands snaps when you are trying to capture a fish, you will still have the one holding solid.
The Specialist's knot is useful when you should affix two different pieces of angling lines. It is excellent for tying together two angling lines of different diameters. It is a very easy knot to master yet it produces a small angle in the fishing line. This knot is usually helpful for those fishermens that have the tendency to keep little bits and also sheets of aged fishing lines.