Snell Fishing Knot

Insert one end of the leader through the hook's eye, extending 1 to 2 inches past the eye.  

Insert the other end of the leader through the eye in the opposite direction pointing toward the barb of the hook.

Hold the hook and leader ends between your thumb and forefinger of left hand.  Leader will hang below the hook in a large loop.

 Take the part of the large lower loop that is closest to the eye and wrap it over the hook shank and both ends of the leader toward the hook's barb.

Continue to wrap for 7 or 8 turns and hold wraps with left hand.  Grip the end of the leader that is through the eyelet with your right hand and pull it slowly and steadily.  Hold the turns with your left hand or the knot will unravel.

When knot is almost tight, slide it up against the eye of the hook.  Grip the short end lying along the shank of the hook with a pair of pliers.  Pull this end and the standing line at the same time to completely tighten the knot