At best it is inconsiderate; at worst it is against the law.

Luckily I made sure this house hack still made sense to me in the worst of scenarios where I could only house myself. 

I figured if the numbers make sense (i will get to those in a minute) and i can afford the house worst comes to worst, meaning not defaulting on the loan, Iam willing to invest in the property.

-How to sort leads and determine motivation.

You may be able to but you should plan for the worst. 

The tenant was every bit as much in on the side deal as Kurt, and Kurt still had to credit every penny.Enforcement types of all sorts tend to go easier on the cooperating/complaining party.  

Now I'm worn down--and NOW I get my worst tenant situation of all, involving a felon with serious anger problems, who moved in with a seemingly good single-mother tenant, without my permission. 

It's been a while and I realize I've been posting a lot less, but I came to the opinion that THERE ARE LOTS OF YOUNG PEOPLE WHO ARE A WASTE OF SKIN and IT'S VERY POSSIBLE TO FAIL AS A PARENT through my experience as a teacher.The worst failure as a parent that I ever saw in my position was a Greek national lottery winner.

Verifying last 2 years of rental history and income extremely important to find the “best of the worst”.Make sure you understand the Class of properties you are looking at and the corresponding results to expect.

You also have to look at your own War chest of money and make sure you can roll with the worst of the punches that could happen.