I live in California and laws vary of course, but I talked to a friend who was in the same situation. Her solution:
For an annual fee, which my friend pays, her sister maintains a *mobile home park license*. The sister had to meet some requirements, such as so many feet of land with clearance, and compliance with utility, safety and emergency guidelines, but the two sisters and the sister's husband worked together to get that stuff done.
She says the license was granted within 4 months, time that included two inspections. During that time, she sold her double-wide and bought a used single, and used the profit to help fix up the rental space, and etc, and to pay the home's transport fee. Her home now sits on a pretty little spot on her sister's property. She's been there for over 3 years. Her 'rent' is her share of the utilities and the annual park license renewal - in total, about 3 thousand dollars a year.
This may be of no use to you, but I thought it worth mentioning.