All can work, depending on the severity of the nuisance and sensitivity of the tenant and landlord. 

They are less recession sensitive. 

I was just posting on another board to someone who had 5k savings and wanted to buy 5-12 doors that they better have good reserves to account for repairs and vacancies.It seems like a price sensitive market - so yes, renovating the roof is just the cost of doing business as opposed to a justification for raising rent (new roof!

We asked for a restraining order, and the guy always goes back.

A sensitivity analysis does help a lot here and there are some key variables that dominate many models; like rents, vacancies, etc.

If there's a hole, it may be a red flag.b) sensitivity analysis: I examine all the assumptions, and make sure I can live with the worst case scenarios.c) "Stall and see": if they are getting money over multiple years, and there is no penalty for investing later, I would usually wait so I get some real performance data, versus having to look at theoretical pro forma information.d) Recession stress test: I will not invest in anything, until I subject it to recession level stress and see if I can live with the result.

These types of programs are better suited for investments that are more time sensitive or transaction intensive in nature such as ownership of property, tax liens and the like - or even just a portfolio with multiple static assets. 

Even at B class (Rent $1400-1600) income and background checks rule.I require 4 rents income with low FICO, and only 3 - with decent score.Eviction is much more sensitive subject than credit, even if it happen 5-7 years ago.

You were prepared to spend the money but they weren’t, if it was known it was soap scum they might’ve elected to clean it themselves, and I’m always sensitive to the fact that a tenant’s finances might not have much flex.

Trying awfully hard to restrain myself from going after theory #2.