We are storing our AS in an enclosed storage area that has a 12-foot door so backing it would be a problem for us. We purchased a Trailer Valet XL Trailer Dolly that rated to pull up to 10,000 pounds but only a 1,000-pound tongue weight. The new version comes with solid rubber tires so I figured it would work for our Class 33FB with little over 1,000-pound tongue weight. I happy to report that worked great. We used an HF cheap 18-volt drill to power the Valet and moved over flat cement without a problem and was easy to steer. We are extremely happy with the performance of the Valet. I would not recommend trying to use on anything but a smooth hard surface. Here is a link to the exact one we purchased. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
PS The trick is to ensure the ball on the Valet is secured into the tongue of the trailer and you use the spanner wrench to ensure it's lockdown tight.