It does not have to be instant but if you buy a 4 unit do some cosmetics get rents up and then 2 years later rents have also grown organically you can cash out refi to use the cash for the next deal.

Instead of bashing what you don't understand, you should first learn about it, then come back so we can have a more intelligent discourse.Simply adding more to your principal portion will achieve a similar goal, without the side-benefits of helping your credit profile or making cash instantly available (from a HELOC or other LOC) should a sudden need arise.

It's not like a stock that can crash instantly, therefore i always have phrased my prediction as a 20-30% correction over a 1-2 year period. 

If its in a good location in a good market you have instant gold.

They all want an instant cash out.

But also so does utility, the utility that it provides allow us to store, exchange, and move our money instantly.

The first question when I get with the seller and it instantly goes to well how do I protect myself.

Once you have that, subtract out Mortgage and ulitilites (and property management if you DON'T plan to self manage).From there I think you start to get a feel on STR vs sell.My gut tells me, with the volatility in the STR and real estate markets, not to mention the economy, it would me hard for me to not take a deal that brought a instant ~6 figure profit, and that's coming from a successful STR owner.Lastly, it's not all about financials....do you want to own/manage an STR?  

I am a young professional with a good job, so the $10k LOC was almost instantly approved.

There are multiple options available for screening packages; tenant involvement/no tenant involvement, instant reports, hand-compiled reports, and even income verification.You can find further information by going to Tenant Screening under the Tools tab.Best of luck to you!