The Double Overhand Loop is a very quick and easy way to tie a loop at the end of the line. It is not a very strong knot but it is fine for attaching a sinker. For most other applications other stronger knots are better options. The double overhand loop retains around 55 percent of the line original breaking strength. A simple and yet reliable fishing knot. Watch this video knot-tying tutorial and learn how to tie a double overhand loop fishing knot.