If your left eye dominant just close your left eye and your right will take over. I don't have any experience with this and hadn't really thought of the drawbacks big country mentioned. It would probably be wise to switch quickly if you are going to so that you don't develope any bad habits. I started shooting with one eye closed and am trying to learn to shoot with both open now. You can get a better visual of where you hit the animal, which is a problem I sometimes have.