I also have the Renogy Solar Suitcase (200 watts). I haven't run into that yet, but if we were going to be away for any distance/period of time, I would put it away. I don't see any way to secure the panels. If you come up with something, I'd be interested in hearing about it! I'll watch this thread also.
USAF Veteran, Retired Security Professional
The only thing necessary for evil to prosper,
Is that good men do nothing.