will always be a concern as all modern Airtreams
use the Alcoa coated panels with many rivets and cut edges.
Whatever method you choose to mitigate, inspect often and do it consistently.
After 17 Seasons I realized that it will never appear on all the seams and rivets.
When it shows, I attack.
After the first 4 years of worry only a very few new areas have shown up.
I scrape clean, cover with clear, and seal. A thin coat of Corrosion X
"Any nation that can survive what we have lately in the way of government, is on the high road to permanent glory."
"Mary-Jane....'cuz 2020 sucks"