@Michael Plante Check with the mobile home dealerships in the area as well as your local manufactured housing association.

That's a play there, but land is so expensive now that unless you buy it years in advance, your upside potential is going to be limited.You might have some luck with manufactured park development as there's a growing need for that product, yet it's not sexy and so no one focuses on it.

You should seriously consider joining the Texas Manufactured Housing Association for many reasons, not the least of which they have the forms you need.

Your local manufactured housing association as well as the local government entity in charge of titling mobile homes are both good resources to start.

Economic anchors are things that are not going anywhere anytime soon, like state government, major universities, major health care centers, or manufacturers that are independent of the economy like military suppliers.I understand that the closer the anchor the better, but does it have to be in the same city/zip or can it just be in same county or next town over?

Most importantly, does any of these submarkets have any economic anchors  like state government, major universities, major health care centers, or manufacturers that are independent of the economy like military suppliers that employs most of the residents of that submarket?

This should get you off to a good start in what to look for when you are looking at key points in mobile home parks / manufactured home communities but, this is only a start!

While my 9-5, (I work in the pharmaceutical manufacturing industry), is my steady paycheck, it's time to get out of the rat race.

As both @Dustin P. and @Doug McVinua have stated the communities around Chandler (Gilbert, Mesa, Queen Creek, San Tan, Tempe) are just as good from an investment perspective.There has been a lot of press concerning future job growth both in Tech and Manufacturing in the East Valley. 

Macroeconomic factors could impact Ypsi, especially since it is (I assume) heavily dependent on auto manufacturing.