Below is a posting that I just made in response to a poster over on a shotgun forum. The "new dots" that I am using on my left lens (am right-handed) have helped my shotgun shooting SO MUCH that I wanted to repeat the info here to benefit this gang!
We ALL have lever-action shotguns -- don't we?!?!?
Old No7
You might want to try these inexpensive colored dots, as they are working really well for me -- at less than a penny each -- and I shot 2 rounds of trap and 6 rounds of sporting clays on 4 different days, all using the same red dot! (I would just unpeel it and move it to another set of glasses that's in my shooting bag.) The red looks vermillion when on my glasses, and it "unfocuses" my left eye "just enough" so that it cannot take over and dominate the right eye. I don't have true cross-dominance, but my shotgun instructor (just last month, and it was my first formal shotgun lesson in 45+ years!) said my left eye was "almost as strong" as the right, which was an issue especially on targets starting low and fast from the left.c.j. wrote:"I have done a lot of research on this and wanted to get some feedback from some guys on here. I am left eye dominant but shoot right handed...
...I don't really want to walk around with tape on my glasses all of the time."
These see-through dots have really helped me -- and my scores were up by 15% to 20% on those recent shoots I mentioned above. And I had more confidence and more fun!!!
You can buy them for very little money Here On Amazon or look for them at Staples or other office supply stores.
Be sure to get the "see-through removable" ones! (Not the solid colored dots...)
Unlike a piece of black electrical tape, as the dot is put near top of my lens positioned so it blocks my left eye only when I mount the shotgun, the dots are not a problem to wear while walking around the range. In fact, we walked quite a ways on that sporting clays course, up and down some woods trails too, and the dot on my lens didn't interfere with my normal vision when looking straight out my lenses.
Try them... For little $$$ you have little to lose and MUCH TO GAIN!!!
Good luck![/color]