If you have enough room in your storage facility consider getting a powered dolly. There are AC, DC and Gas options.
We really wanted to store our Roos at home but the spot where we stored our previous (much shorter) campers was impossible to back our Roos into.
We stored our 21SS at a nearby facility for a while but it was a pain preparing for trips and unloading. We got a Power Mover and it's an absolute breeze to use and was well worth every penny to us. No stress at all! (DW practically kissed it the first time we used it!)
2016 Roo 23IKSS / 2011 Tahoe
2011 Roo 21SS / 2011 Tahoe
2006 Bayside / 2006 4Runner
1999 SantaFe / 2001 Sienna
1967 Nimrod / 1998 Outback