Cross-dominant here, also. I've been wanting to try this for years, and never seem to remember to do it. I've heard it works wonders shotgunning, something I'm just recently getting into, but if it makes my handgunning, which I've never had a problem with, even better, then I'm all for it.I noticed a guy with a piece of semi clear scotch tape on the lens of his glasses covering his non dominate eye. I asked him about it. Sure enough, he was like me, but found that the tape “fogged” the view on that eye, allowing him to keep both eyes open, but remain focused on the sights. I tried it, and sure enough, it works.