I've had a bit shooting problem because my left eye is either dominant or very close to being so. Hey, I heard of a product on Tom Greshlan's podcast. I won't post the product here, I don't know if that would be Kosher to the moderators. I can PM you if you want. (assuming that is OK with the people.) Basically it was a plastic decal you can place on your shooting glasses that make that area fuzzy. They are little plastic things that stay by static electricity (I think). No glue or anything. The package comes with a dozen or so different collored, penny sized decals. Took a few shots getting used to, but it really helped. I wasn't fighting my left eye to look down the site with my right eye. You can keep your left eye open, which just feels better to me. Anyway, they helped me. I'm glad I got them.