It would be desecration to put a full sized flag on the floor of your trailer and park stuff on it, but not if you paint the image of the flag on the trailer. Using the image of our flag is fine (yes, even in ways that boil a patriot's blood), its when you use an actual flag that it becomes an issue, at least in our state. Kommiefornia would probably let you live tax free for using an actual flag, here it might get you an extended stay in the red cross hotel.