I'd sight in in wearing what you'd most likely be wearing while hunting-either the lenses or the contacts.You could be looking thru thebifocal lens and blurring thetarget out or if you're wearing the contacts you could be focusing on the pin--it's hard to say.I don't use sights so I can't be too much help.I'm sure somebody here will be of more help to you on that.
Now if you'd get a recurve like your husband's,you wouldn't have to worry about sights