There is a very slight chance that I might be spending 2 years in the tropics. I am panicking already about how my beautiful cub would survive the rain and humidity. Any one with first hand experience willing to calm my concerns.
I know of a C170 with a dark stain in one wing that wouldn't wipe out. Imagine a wing leaning against a shed with the leading edge down and 18 to 24 inches of floodwater. That is what I imagined when I saw it and mould or mold was not a consideration. It's too far away to sneak another look.
We have been operating a few PA-18 for 25+ years at about 4 deg North and and 10 miles from the coast. Keep it hangared. Don't let crud build up around tail post. (Last 4 feet metal?). If your fabric/coatings are good you can keep them that way. If they aren't good, you'll sure know in a few years.