This is THE issue I'm struggling with right now. Some nights, my left eye gives up and lets the right eye (my naturally dominant eye) take over, so I miss.
I shoot MUCH better with my left eye being the dominant one, as I recently discovered. But I'm naturally right eye dominant and have shot that way for most of my life. I'm having an eye battle in my brain and it doesn't like it.
Fran is right, the approach of the stance really helps place the dominant eye over he shot property. I use Gene's "wall" technique and that seems to help the most to get and keep my left eye over the shot. But that fails occasionally, too.
Another technique for me is to close my right eye during the stance set up so my left eye is the only one that can do the job. This is hard for me, though, because of all my other eye problems and it gets fuzzy sometimes before the stance is made properly. So, sometimes, I cover my right eye with my right hand and relax as much as I can.
One other thing that is helping....When I use the "wall" technique to get my left eye in position, to got into my stance I bend my knees first, instead of bending at the waist first, so my body goes straight down and can't wobble to the other eye, if that makes sense.
Another thing is BEFORE going into the stance, be sure to see the shot with the proper eye while standing! Take the time while standing to make sure it is ok. If you wait until you're down on the shot, you can't change much then. Always do the eye thing while standing and then figure out a way to go straight down on the shot. That's the proper technique anyway, but when in stroke, sometimes I tend to unconcsciously rush past that part.
Jeff Livingston