BEST WAY TO TIE A KNOT IN SHOCK CORD (BUNGEE)

STEP 1

Take the first end of the shock cord, and make a crossing turn.

STEP 2

Take the second end, and make a crossing turn through the loop created in the first end.

STEP 3

Make the final loop, by threading the two loose ends through the middle loop, formed by step 1 & 2 

STEP 4

Tighten down, by pulling the loose ends away from the long ends

The 'Ashley's Bend' knot is a very strong and secure join when used on similar cords; it does not slip even when under severe shock loads, but can be untied easily if needed.