By getting to know someone’s work ethic, goals, and character over time, you’ll be in a much better position to determine if they’re a good fit for a long-term collaboration.

But you need to be at least transparent and ethical in your practice.

Many people on principle alone may not want solar panels as hard as that may be to understand.

Search Google for "file ethics complaint [STATE]" and you will find instructions for filing a complaint against the property manager.

You need to not necessarily follow a book to a T, but just basic principles.

You might not get as much cash flow with that equity as you would get if you sold and put it into say an apartment building, but with the low mortgage rate you are likely getting some pretty good principle paydown each month and it's in an area that will see good appreciation/rent growth long term. 

These are professionals with additional training and a stricter code of ethics.

The income (rent minus management) should cover the costs (principle, interest, taxes, and insurance) depending on the property's price point. 

I think there are many principles that he teaches that should be considered.  

With that said I do know a few hard money lenders who operate on the principle that they have to like you to lend you money, but most