Pete,
I don't know the answer to your question. Let's see what type of replys you receive on this site.
If you don't get good answers to your satisfaction let me know and I will call some of my friends who work in the airstream factory, maintenance area and see exactly what they think of buck vs olympic rivets on a 30 foot trailer.
The guys I know have a lot of experience doing alum repairs and I would have no reservations in following their opinions.
Keep that trailer under a cover or you are going to blind someone with the reflection.
