Am I the only one who stores it in the bed of my TV? We use full hookup sites, so this won't work for dry campers. After dumping my tanks I remove it from the trailer, run city water through a dedicated short run of hose, remove it from the site's sewer and put it all in a large leaf bag until we get home where I let it dry out. I had one of those heavy duty yellow Good Sams bags for two or three years. Yup, I'd rinse it, too.
No need to remove attachments or fuss with the bumper storage.