corosion during storage

There is a report on serious corrosion in PIK 20 s due to
condensation during storage. The rod ends in particular are
susceptible.
One recommendation is that the trailer be sealed with silica gel inside

http://trafi.mailpv.net/a/s/95652244...0a2ef4/1825275

I am skeptical that a trailer can be sealed well enough to prevent
complete air changes due to pressure changes during say 6 mo of
storage.

Has anybody tried this?

John F