Double Figure Eight
The figure eight follow through is one of the strongest knots. It forms a secure, non-slip loop at the end of a rope. Also known as the Flemish Bend, this is the most widely used tie-in knot by mountain climbers. The reason is that it is strong, secure and easy to visually inspect.
Here is a video of as mountain climber tying the knot.
Square / Reef Knot
The square knot has many uses, from securing bandages and packages to joining two ropes together. A square knot works best when pressed against something else and the ropes are of the same diameter. It should not be used to hold a heavy load.
Tying a square knot is as easy as right over left, left over right. Here’s how:
Hold an end of the rope in each hand.
Pass the right end over and under the rope in your left hand.
Pass the rope end now in your left hand over and under the one now in your right.
Tighten the knot by pulling both running ends at the same time.
