This is a video demonstrating how to tie a perfection loop. This is a loop that is necessary for fishing. It can be using for sinkers and fly fishing. It is good for any purpose where a loop is needed. A loop is made first. The loop is held between the left thumb and index finger. The end of the line is taken and put over the loop. Then switch hands and take the end of the line below the main line, making two loops. Then the end of the line is placed between the two loops. Take the top loop now and put it through the loop below. Then take the main line and pull it tight and the loop is ready. The end line must be cut and trimmed.