You would still screen them!

Exhaust your no/low-cost education options before spending a lot of money; there is lots of high quality content available for <$100.Books: Mobile Home Park 10/20 Investment System by Dave Reynolds, Frank RolfeMobile Home Wealth Part 2: How to Become Even Wealthier investing in Mobile Home Parks by Zalman Velvet, Stuart SilverThe New Investor's Guide to Owning A Mobile Home Parkby Laura Cochran, Erin CochranAlso check out The Mobile Home Park Academy and Mobile Home University websites for their free “biggest mistakes” eBooks.Park Place Education has a free eBook available on the site.Podcasts: The Mobile Home Park Investing Podcast with Kevin Bupp and Charles DeHartMobile Home Park Investors with Jefferson Lilly & Brad JohnsonMobile Home Park Mastery with Frank Rolfe Mobile Home Parks In Real Life with Ryan NarusWebsites/Blogs: Park Street Partners - http://parkstreetpartners.com - This is the investment firm run by Jefferson Lilly and Brad Johnson.

I might consider a screened in porch if it were mine. 

If it is in the "chunky middle" of the bellcurve price-wise and quality-wise then you could expect to have a low vacancy, but my clients who operate on the top or bottom of the bellcurve in terms of price OR quality often have tenants who average 10-11 months of the year. 

For quality, research Speed Queen. 

Top applicant for a property appears to be a mother-son combo, he is 23 and speaks good English. Both are from Columbia and appear to have come here in the last year or two. Both have SSN, hard-working, blue-collar, v...

., but I can't see inside the place, what it looks like, what the renovation quality is like, etc.I'm a bit afraid of just committing to a purchase without seeing it myself, and from what I understand many of these turnkey units sell immediately after being listed, so timing is sort of important.Initially, I thought I'd ask my family who lives in the area to go check the places out for me, then make a purchasing decision, do inspections, etc.

Just make sure that you screen her thoroughly (i.e. credit, criminal and evictions history) so that you don't end up with someone who doesn't pay or pays late every month. 

Raise your screening criteria to weed out the bad apples in the future.

Also water heater life is controlled by maintenance, usage, thermocouple, piezo quality.