Since this thread has already drifted, and with all this talk about what's okay to qualify with, I'll share a story about the day I first qualified.
There was a tall lanky gentleman with white hair that showed up for the class. When it came time for us to go to the range, he put on a Colt 1911 in a holster with a flap over the top that looked to be older than I was. You could clearly read the embossed USMC on the flap. When it came time to shoot, he stood at the firing line and turned sideways to the target. He raised the gun with his right hand and put his left hand behind his back, as if taking a dueling stance. He was able to get his fist shot off which struck dead center before our instructor stopped everyone.
The instructor approached this gentleman and said we can't fire the gun with one hand, and showed him how he wanted him to grip the gun with two hands and face the target head on. The old gentleman listened quietly and simply said, "Yes sir."
The instructor stepped back away from us and then gave the order to continue firing. The old gentleman proceeded to put his next four shots dead center while facing the target and using both hands.
I was standing in the lane next to this old gentleman and saw his target when we had finished shooting that day. Almost every shot was inside the 10 ring and the rest were inside the 9. I'm not sure why the instructor wouldn't allow one handed shooting, but for this man it didn't matter. I would like to have seen what he would have shot from his preferred stance though.
Do what you say you're gonna do.