The yacht is U.S. registered. These are not courtesy flags, but rather honoring the owner's home or birth country. To the best of my knowledge there is no proper place for such flags, but is there a permissable place? I've seen such flags flown from the halyards of sailboats and from the outriggers of Sport Fishers. I can't really dictate to an owner of a small craft that he remove such a flag, but there are places where we are certainly going to hear about it. Any suggestions?