Just thinking out loud here have you looked into the swing out arm idea that could be mounted to the inside wall of the storage door on your trailer. This will not take up much room and when you swing the thin LCD TV back in it will not take up much room on the inside wall...
Nothing is sitting on the inside floor of the storage area...
Google images
This would be an ideal way to lock up the TV when the WX gets bad or you want to leave the area for awhile...
Roy Ken