In many jurisdictions, this would equate to surrendering possession of the unit.Ideally, you want to cross paths with them and have them sign a "return of possession" document.  

To add to that, the air quality test and duct swabs would have to equate to levels (of the TOXIC kind) far higher than what naturally occurs in Florida's tropical climate.

My simple math equation would be what's 300 x 10?

You may be able to find a better rate, but I have a HELOC at 9% at the moment, so that equates to $1,500/mth [($200k x 9%)/12], interest only.

Stability equates to less time spent filling vacancies and more time doing other things for their property owners that assist you in making even more money; like finding more properties for you or managing expenses more diligently.

But I digress the second part of the equation was to cash flow 12% cash on cash.

Here’s the equation: Gross rents for all units LESS a 25 percent vacancy factor MUST be greater than or equal to the mortgage payment. or(Gross Rents * 0.75) ≥ PITIWhen calculating the gross rents, the bank takes the LOWER of the current/appraised rents.

Lesson learned, when it comes to money and tenants "trust" should never enter into the equation. 

I don't know about anyone else, but for me that sort of thing equates into very real and substantial dollars long-term.

You're right that a judge would see through any rhetoric that's masking what equates to blackmail, whether it's paraphrased or not.