@Hunter Gibson wrote:
"If I can get a deal to cash flow on long term rent with no money out of pocket in a great area I will buy that deal every day regardless if I am underwater"
Because you are young, asking the question you are, and that you don't mention specific rental experience in your profile, I am guessing you are new at holding rentals.
If you have a property that has net positive cash flow you are probably not under water. But in today's market, with prices at very high levels, it is hard to cash flow at 100% financing. Ther are a LOT of hidden expenses that go into holding rentals that many new investors don't recognise. Management fees, lease up costs, turnover costs vacancy rates, repairs, licenses, non paying tenants etc. are all examples of these.
What you say is good and true in theory, However when you run actual numbers many good sounding strategies don't work. I don't say these things to discourage you. I say them so that you can be better prepared to deal with reality. Good luck.