Maybe owner will sign deed back to your dad but make sure you get title insurance and know if any liens are outstanding.

If one tenant requests to move out then have the one staying requalify and sign a new lease.

I believe I have already signed up on their page the other day but just haven't actually joined the group which I plan to do today.

However, in the case that I don't receive rent, how would I determine which of the three co-signers to go after?

Investors typically only see dollar signs.

Does he jump jobs-- that's a sign he's hard to work with.   

If they are willing to pay back rent at all you are lucky, getting them to sign some sort of promissory note would probably be your best bet, but talk to a lawyer. 

It is at a cost of $40 per adult.For Tenant, after showing if they are interested in signing a lease: 1.Fill out preliminary application.2.Verify application for 3 times monthly rent income, pay stubs, no felony, no evictions, at least 1 year on job.3.Query all adult names in state Courts Online system.4.Query Facebook.5.Query County Assessor page for properties in their name (foreclosure?)

Who signed on the current note?

These are of course classic signs that your roof needs to be replaced.