Yes, a rule of thumb COULD eliminate a good deal if not applied correctly.

Plenty of opportunities if you price your place correctly and you offer better options then local hotels. 

You're certainly correct, this market it pretty awesome, which brings in a lot of competition. 

Quote from @Levi Perl: The purpose of background screening is to determine a level of risk, and then you decide if you can mitigate that risk.How does a DUI conviction from three years ago impact the tenant's ability to pay rent or maintain the property?

The audience is pre-disposed to believe.   100% correct, Chris!

Maybe your seller just wanted to put it under contract first.You're correct about the 45 days.

From what I see all the people answering to me here (and there are so many) are just coming against and refusing to agree with my simple statement: "a landlord is not above the law or norms by its personal choice or presumed capability to judge what he don't know" or as well "a landlord cannot deny or miscarriage a service to a stranger without a known valid reason and at the same time pretend to be operating professionally or loyally to the moral"Basically I'm telling if you are not able to do your business correctly it would be better to find someone else than you, mainly when your ideas about "squatter" or fair treatment are coming from ignorance or completely invented. 

Is this the correct Bret Hudson?

To thrive in real estate investing, you must maintain a firm grip on your finances.

I believe this is correct, but only limiting to 4 total.