On Wednesday, July 19, 2017 at 7:00:13 PM UTC-7, Michael Opitz wrote:

Be very careful with open trailers. Any wind loads can really wreak
havoc on the front hinges and bulkhead of the trailer. An open lid has a
huge moment arm to twist on the front hinges. If a dust devil comes
along with the trailer open, it will likely be "toast".


So much for fun!
But he's right, an easy way to wreck a Klappdachanhaenger.
Try doing it this way...
http://cobracoaches.net/
Jim