A technique taught in the book, "Ultimate Unarmed Gun Defenses, Volume 1." This technique is very fast, very effective, and requires almost no strength

the good old sucker punch wins again

When you drop your guard, whichever foot you keep on the ground must be solidly planted in order to give you the leverage you need to perform your hip heist. Use your elbow to help you sit up and your attacker’s shoulder as a way to push off once you’ve placed your foot on their hip. ...

This technique involves the use of a “closed guard,” i.e. your ankles are crossed behind your attacker’s back. This gives you the stability you’ll need and also ensures that he/she doesn’t escape your choke. When grabbing your attacker’s lapel/clothing, grab it a little lower than the neckline...

Tai Otoshi - side body drop by Mike Swain