It is better to say something like "I can pay you over time and you will earn ineterest until I pay it off"  As simple as the concept is, it can be tough to explain to a seller.

My pre-conception is that Section 8 is not profitable, but I want to help in some way.

Hi Sean, I've heard of this concept previously & wondered the same.

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with zero or negative relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560, little to no good tradelines, lots of collections & chargeoffs, recent evictions.

Companies delay repairs, frustrating tenants.Tenants do not make themselves available for warranty techs, delaying repairs, creating a negative feedback loop:(

I always had negative cashflow.

Focusing on the "landlord friendly" state concept is wrong - clearly many successful investors continue to invest in what can be labeled as non landlord friendly states. 

I would not especially if it’s a long term holdLastly if cash flow is negative they pitch in ?

I am a current house flipper and looking to start converting into more passive investments and am really interested in the note investing concept. 

With high interest rates, you most often don't get cash flow and it can even be negative.