Also, are you talking mobiles in parks, or manufactured homes on foundations and land?

There's a lot more business and manufacturing coming into the city and surrounding suburbs and the medical infrastructure in Cleveland is booming, supplying a lot of good paying jobs where tenants will pay top market rent.  

I have a small furniture design and manufacturing business in Montrose CO.

There is also some great anticipated growth in the Marysville/Arlington area near the MIC (Manufacturing Industrial Center), once Boeing/Paine Field opens up commercial flights in September 2018.If you go South you will want to look in areas like Tacoma & Pierce County.

Job Quantity and QualityIn many parts of the US, manufacturing and similar jobs are going away and what remains are service sector jobs.

You want a job market that is growing and not dependent on industries like manufacturing.

I got a random lead today for a manufactured home in Sanford, FL.  

You could just use a contract of sale like this:http://www.eriebar.org/files/Manufactured%20Modbil...But honestly if you've never done it before paying a laywer or an online lawyer for a contract is a good idea!  

I did small jobs in my parents' manufactured home dealership in Maine when I was a little kid.

Possibly great location for smaller houses or manufactured homes.