How do you ensure that both the referrer and the client benefit from the program?

Do you have a property in mind?

So my question is what books do you guys recommend? 

They do ask for a lot more documentation than other DSCR lenders.

I need advice on how to market a house site unseen.

This has nothing to do with no fee's.

If you are not using a PM all you need to do is track income and expenses. 

HOWEVER if you are Trying to ACQUIRE the property and the borrower on the Note is now deceased - the ONE Big question (among others) is How do you get marketable and insurable TITLE Transferred over to you SUBJECT 2 that existing debt?

You can do a 1st or 2nd Mortgage DSCR loan and be able to close in an entity.

If you do that and share the results here, I think you'll have more members of the community happy to weigh in.