Practicing shooting a pistol with your non-dominant hand (aka weak or stupid hand) is something we all need to practice more often. Why? Well, because Mr. Murphy is always lurking and the chances of something happening out on the street where you are either shot or injured in your dominant shooting hand or arm can happen, so why not have the skill-set to negotiate that issue in your toolbox?
Here are a couple of drills from guys I trust and have found them to be extremely practical: one from Greg Ellifritz (One Handed Shooting Drill) and the other from Dave Spaulding (The Rip Off Drill).
One Handed Pistol Shooting Drill
Stay Alert, Stay Armed and Stay Dangerous!