my wife just started shooting last year and at 63 picked it up pretty quick despite being right handed and left eye dominant. We tried left shoulder and tape but in the end she decided just to wink left eye before shot. As we recreational shooters it is good enough.
At 69 my left eye is now stronger than right and if I try an O/U my left eye wants to play but it looks down the side of the barrels. Thanks goodness I am an SxS guy so my right eye stays in power

This ain't a dress rehearsal , Don't Let the Old Man IN