The double bowline is a good choice if you need more strength than a single bowline knot can provide. It is historically known as a boating knot, but can also be valuable for anglers, hikers, climbers, and more. It forms a single loop and will not tighten or slip under strain.
HOW TO TIE:
1. Create a double loop in your straightened line.
2. Pull one of the ends through the dual loops. Lead this end around the backside of the rope, then bring it back through the double hoops a second time.
3. Pull tightly ensuring ropes are meshed together all the way through.