What I teach for open hand vs knife is Spontaneous Attack Survival. By control group for the techniques was that it had to work for corrections officers and taught in four hours. We pressure test it against stun guns. Small ones that mimic the size of a the edged weapon you will face in the street.
The 800 elephant in the room when it comes to edged weapons is that it does not matter how good you are with a pistol or using a knife. Your response to an edged weapon attack is going to be open handed for two reasons-
You will probably not see the weapon and you will not have time to deploy your own weapon. As commented on previously attempting to deploy your own weapon at close distances causes task fixation and takes your strong hand out of your defense.
When people do train open hand vs knives they too often only work on defending against a single hard attack, not the cyclic powerful attacks they will actually face. You have got to move to the outside, attack the head, elbows, and knees until they are no longer a threat.- George
The 800 elephant in the room when it comes to edged weapons is that it does not matter how good you are with a pistol or using a knife. Your response to an edged weapon attack is going to be open handed for two reasons-
You will probably not see the weapon and you will not have time to deploy your own weapon. As commented on previously attempting to deploy your own weapon at close distances causes task fixation and takes your strong hand out of your defense.
When people do train open hand vs knives they too often only work on defending against a single hard attack, not the cyclic powerful attacks they will actually face. You have got to move to the outside, attack the head, elbows, and knees until they are no longer a threat.- George