Back Attacks:

Widely considered the most dominant position and safe from most counterattacks. Use your heels as "hooks" on the inside of your opponent's legs and your arms for controlling their upper body.

Common submissions available: naked chokes, collar chokes, arm locks, triangles.

Back Defense:

Moving to any position is arguably better than having someone on your back. Protect your neck and arms and think about trying to get your shoulders to the mat and face your opponent. Understanding the dangers of their choking attacks is a solid way to form a good back defense.

Back Control : 

The player takes control of the opponent’s back, placing the heels between the opponent’s thighs without crossing the legs. Must have one arm trapped (see “seat-belt”) or the ability to trap one arm in order to be given the points. This position is awarded four points if held for three seconds in competition

Back Take:

The transition from a position such as side control or mount to obtain back control.

Hooks:

Hooks refer to the top player’s legs when in back control. To place the hooks, one puts the tops of their feet on the inside of the controlled player’s thighs and presses out. This is used to control the rotation of the bottom player’s hips as they attempt to escape.