The Improved Clinch is very easy to tie, which is the main reason it's so popular for connecting monofilament to terminal tackle. It's most effective on lines under 20-pound test.
Pass the line through the eye of the hook, swivel, or lure. Double back and make five turns around the standing line.
Holding the coils in place, thread the tag end of the first loop above the eye, then through the big loop.
Hold the tag end and standing line while pulling up the coils. Make sure the coils are in a spiral, not overlapping each other. Slide against the eye.
Clip the tag end.