Angler's loop

An angler's loop, otherwise known as a perfection loop, is a type of knot which forms a fixed loop. Useful for fine or slippery line, it is one of the few loop knots which holds well in bungee cord. It is quite secure, but it jams badly and is not suitable if the knot will need to be untied.

Tying

Angler's loop may be tied

alone and then used,
* it may be tied in the bight or at the working end
* it may be tied one handed
* it may be fashioned with several loops
* it may be locked for additional stability
* it may be tied at high speed in an emergency
it may be tied through an object.

Angler's loop may be tied around the hand, it may also be tied this way one handed, or with several loops if need be:Angler's loop may be locked additionally with half hitchesAngler's loop may be fashioned with several loops

A version with an additional locking turn of the tail called Double Dragon is shown in this video:

Structure

Overhand knot on standing part and half-hitch by the working end.