This is a great question. The key things you’re looking at is position of the gun and distance of the attacker. If you are being grabbed, arm is around you and gun pressed into your head or throat, the closer distance calls for the hooking motion if the gun is positioned on that side of your throat or head. If it’s to the opposite side, the push and attack method works. When I mention the sides you’ll understand because it becomes a very instinctive response. If I’m facing you and have the gun pushed into the center of my throat or slightly to my left it’s more natural for me to hook. If the gun is slightly to my right side the hooking won’t work and I end up pushing it away. If the attacker is at a distance from you I will use the “push” and attack defense. Hope this is clear. If not, in the module defense against weapons, lesson 7 does a great job explaining it.