If you skip around between IRA,401k,SEP etc you may get the information all mushed together in your mind and it will be confusing. 

I skip traced the address, but I could not find the owner's information, so I knocked on the door.

Follow the same process for skipping on the last month's rent.

As a mental exercise, can you imagine the perspective of an investor that bought a property from you just 8 months prior to that email, had his FIRST TENANT miss payments, lie about making payments, make partial payments, then ultimately skip out on four months rent?

You literally skip it completely.

And I note you completely skip the mountain sized hole I blew straight thru your premise.

If the house attracts the type of tenant who is likely to skip out on rent or cause damages, it could be worth it.   

And like Propstream, I just need to run it through a skip tracer and It's GO time. 

You can skip-trace people and use reverse-lookup software to see if the contact info you find that way matches what you've been given. 3.

NEVER skip this step.