I think you'll see the biggest impact in economically weak areas where existing parks have little to work with in demand.

Now, I am disabled with a rare incurable chronic leukemia.

Everybody has to come up with their own strategy that fits their strengths and minimizes their weaknesses.

Please don't try to wholesale houses over $100K in Powder Springs; in fact, anything over $60-80K is probably a stretch, as retail values in that city are very weak right now.

The world economy today is weak, but there is an excess of investment capital looking for returns.

Doing it any other way is tempting, but the potential liability and operational weakness will eventually bite you in ways you do not want to be bit.Make sure that you're licensed up, lawyer'd up, and insured up.

anyone ever end up with a weak investment property (e.g. inspection missed significant issue with building, inherited tenants are a disaster, etc) but was able to turn it into a positive cash flow?  

"Don't mistake kindness for weakness."

You don't settle with someone who has an open case against you unless they agree to close it. 90 days to let a chronic non-paying tenant stay is excessive unless the tenant were making up all the back rent, which he is not.

For us, the two consistent and pronounced weaknesses involve eating out and going to coffee shops.