The danger in Lonnie deals besides Dodd Frank is that all applicants have to be screened and approved by the park office/ manager.  

Determine what qualities are most important to you and interview the different companies against that criteria.

I've found it a grea market for finding quality rentals, right in your price and rent range. 

Many of the windows were missing screens and the windows difficult to operate (or not at all) when I purchased the property.  

Granted, the cost of marketing on Facebook will depend on your area, your industry, target audience, quality of ads, etc, but in general, you are probably not going to get away with only spending $50 a month and actually see any real results.

I know Im not the only one doing this because when Im in court for an eviction I get a letter a few days later from a company offering PM and tenant screening services.

The 50% guideline would give you about $575 in monthly profit - if you have to pay most of that towards the loan it could make things a little tight.Did you screen the tenants?

The ability to use the app in landscape mode (turning screen long ways).

Increasing my marketing efforts will result in the need for more everything but I will really need help screening callers.

The quality of the jobs being added, and their pay, is not improving it seems.