Page 28 - D. Raleigh "Knots and ropes for climbers"

The Double Half Hitch is two Half Hitches tied one after the other, and is a popular knot for securing
tent guylines. Despite the name, it's not twice as good as the single Half Hitch. In fact, there is no good
use for this knot; if you have enough rope to tie it, you also have enough rope (and wherewithal) to tie
the better Double Fisherman's. The Double Half Hitch is included here only so that you know what it
is and to avoid it.

Common Use
Securing tent line

Secondary Use
None

Double Half Hitch.

Ring Bend

The Ring Bend has a mind of its own. And a devious one at that. Turn your back on it and it will
loosen itself and come undone. Despite its poor character, the Ring Bend is a favorite for tying
webbing, as it has the redeeming qualities of being simple, clean, and easy to visually inspect. Use this
knot to fashion runners and tie-offs from webbing; be sure to leave a 3-inch tail on each side of the
knot.

On occasion I've seen climbers use the Ring Bend to join their top ropes or rappel lines. I recommend
against this; the Figure Eight Bend and Double Fisherman's are safer.

Common Use
Tying webbing into loops