Those are well thought-out comments. And I do agree with your comments on ASA classes,after reviewing your link I agree they are WAY overpriced.
As for "certification", I don't have any, and have no intention of getting any, either. I once asked the US Power Squadron if I could teach any of their courses, and they said I could get "certified" to teach only if I took all their other courses first, for a price. They were not interested in my qualifications. That sounded like a racket to me, and I told them so. I do have qualifications, but unfortunately, that's not the same as certification.
These are the qualifications I plan to send to my prospective hosts:
"I have Bachelor's degrees in mathematics and astronomy, as well as a Master's degree (1977) in geography from the University of South Florida. I have been a professional geographer and cartographer throughout my professional life, and a Geographic Information Systems specialist and manager for the Planning Department of Broward County. I have been an avid yachtsman and sailor since my twenties and I served as a Second Class Petty Officer in the US Navy, responsible for navigation aboard a guided missile frigate during the VietNam conflict. I have navigated frequently on offshore races and cruises. I own an Astra metal sextant, and have written interactive celestial navigation software for the HP 28 and HP 48 programmable calculators. I have written several navigation related articles for national magazines."
But to be honest, I have no professional documentation or government licenses as a mariner.
PS. Perhaps "CPYOA User Input" is not the appropriate place for this discussion. Sorry about that. Please feel free to respond somewhere else.