I tried a saddle for one of my girls. They only help before the damage is done - to prevent the damage. Once your boys have worked their magic, you have to wait for a moult. And I don't think you will want a saddle on her during the moult. (In truth, I found the saddle broke even MORE feathers - where it was strapped on.)
Yeah I figured I would try them and see if successful. I'll keep an eye out for problems.