Many anglers purchase rigged lengths of leader already attached to a hook. Typically, these rigged lengths will feature a hook tied to a 12- to 15-inch length of leader with a loop formed in the opposite end of the leader. The purpose of this rig is to allow an angler to easily attach a leader and hook to a swivel clasp or loop on their fishing line without tying complicated knots. However, the knots required to make a hook length are simple and can easily be tied by the angler himself.
Attach a hook to the end of a 12- to 15-inch length of monofilament fishing line with an Improved Clinch knot. Form the Improved Clinch knot by passing 5 to 6 inches of line through the eye of the hook. Wrap the free end of the line around the main line for six or seven turns. Begin forming the wraps just above the eye of the hook and work the turns up the line. A small loop will be formed just above the eye of the hook by the line.
Turn the free end of the line down and pass it through the small loop formed above the hook eye. This will form a larger loop alongside the knot. Pull the line through the small loop above the eye and then through the larger loop to the side of the knot. Moisten the knot and pull tight. Cut any excess line from the free end of the knot with scissors.
Tie a Surgeon's Loop in the free end of the monofilament length. This will be used to attach the leader to the main line. Double the line 3 to 4 inches from the free end to form a loop. Turn the loop back and wrap it around the main line two times. Hold the doubled line with one hand and pull the loop to tighten the knot. Moisten the knot slightly as it is being pulled down and trim excess from the knot with scissors.