Haha. From what I've read elsewhere the folding mechanisms are rated for thousands of openings and closings. Should hold up fine either way. I prefer to keep mine closed for storage, less likely to get hanger rash (as we called it back in my RC airplane days) where you have a higher likelihood of damaging something in storage.For flying open seems to work better, closed for storage. But that's just my uneducated guess..
Closed. Spring tension is minimized.