Add a switch to the 50A fuse circuit or get a remote controlled disconnect like Battery Brain. Either one makes it simply to prepare for towing. I added a switch and mounted it under the hood next to the fuse box. You could even bring it into the cabin if you wanted, but popping the hood is easy enough.
You can also get a replacement 50A fuse from a NAPA store that is taller than the OEM fuse. Makes it a whole lot easier to get your fingers on it. Still have to get the pesky cover off that underhood box, though.
Former owner of 2004 American Tradition and several other RVs
Home is West Palm Beach, FL