When fishing with heavy monofilament line, it is important to use a knot that is strong and secure. The best knot for this purpose is the Improved Clinch Knot. This knot is easy to tie and it holds well under heavy loads.
The Improved Clinch Knot is formed by passing the end of the line through the eye of the hook twice. The line is then wrapped around the standing line five times, and the end of the line is passed back through the loop that was created when the line was first passed through the eye of the hook. The end of the line is then pulled tight to complete the knot.