The "Perfect Loop" knot

This simple knot does not slip even on very thin synthetic fishing lines. It is used mainly by fishermen to attach hooks to the fishing line. It is convenient to tighten the loop by throwing it on a well-fixed column.

1. Put the running end under the root to form a loop.

2. Put the running end across the loop from above.

3. Start pulling the part of the rope that crosses it through the loop to form a simple knot with an untied loop.

4. Pull the running end behind the root part.

5. Pull the running end through the center of the knot, carefully securing it under the two parts of the loop.