At the end of the day if you run your numbers and analyze like 10 properties a day, and every single day scour the internet for anything new, you will eventually find something that works and know it almost immediately.

They were a law firm who hunts class action suits to go against companies. 

You have to know your state landlord-tenant laws; they are on the internet:"In New Jersey, a landlord may need to give a 30-day notice to pay rent before eviction if the tenant has a history of late payments and the landlord accepts them.

I’m on the hunt 

The internet books  Morby the sub 2 guys the market for this is quite thin.

From an internet search"Unrelated Debt-Financed Income (UDFI) is a tax that applies to an IRA when it uses debt"

Find Brandon Turner anywhere on the internet for information on it.  

I love how Airbnb just pay me based on the evidence without going through 6 months legal battle or 3 years of collection hunting. 

I hunted for 9 months How did you finance this deal?

Unfortunately, there are so many concerns regarding internet safety issues.