That's my point Ed...My flinters have open sights, still shoot with both eyes open...My .243 and .22 both have a scope, still shoot with both eyes open...

It helps me when shooting at moving deer to keep up with them...I don't watch them with both eyes, close one and then shoot...Maybe because I grew up as a hunter and have hunted and shot many different weapons it's just natural...I'm sure you can teach yourself to be a decent bow shot by closing one eye, but, talking about hunting deer and tracking a deer walking through and looking for that opening and how quickly you sometimes need to take the shot, you will be a better hunter by using the proper shoulder based on your dominate eye and using both eyes for the shot...