Although the omoplata has been grouped as the fifth guard submission it is, by it's nature, an advanced technique in that it is difficult to do as well as being a progression from a failed Armbar.
Much like the triangle choke from the mount. We will use taking the back sleeper as the fifth technique from the guard. Where the omoplata is done from a strong position where you almost have the Armbar and the opponent pulls away in panic leaving the other arm behind, this back take is used against against an aggressive opponent pushing forward trying to stack, as is the elevator sweep, where you no longer have the opportunity to apply one of the four first submissions.
Using true jujutsu, we take the energy of this aggressive attack and use it to gain a superior position, taking the back or taking the mount.
