You can use the trigger guard wrap technique, but you need to be aware of a condition called sympathetic nerve response. The human body likes things to be symmetrical. That's why when you were a kid and tried that game where you rub your tummy and pat your head then try switching up real fast, most people got messed up at first. The potential exists for inadvertently contracting your support hand index finger when you press the trigger, which manifests itself as hits low and toward the support side. It doesn't happen with everybody or even the majority of people, but the potential does exist.
Jerry Miculek has said he uses that technique sometimes, especially when firing larger caliber autos where he wants more leverage to manage recoil. Any number of videos or pictures of him shooting will show his use of this. Eric Grauffel uses it also. I'll tell you the same thing I tell my students when I catch them doing it with the M9: Those people have fired hundreds of thousands of rounds in their lifetime. They know it's not going to happen to them. I make a deal with my trainees. Once they've reached 500,000 rounds fired, they can hold the gun however they want. At 49,999 rounds and less, they do it my way
