Easy way to raise trailer's nose while hitched in campground

Bobbo wrote:

Every one of those things also apply when the trailer is not attached.

Maybe. But if you hear the warning, and know the bathroom is 1/4 mile away, you have a good chance to drive that distance. Most likely you will not be hit, because tornados only hit a small percentage of the warned area. So nothing is damaged, nobody hurt. But if the CG is hit, your best chance to escape injury is in the strongly built building.