We BRRRR 8-10 per year and the flips supplement and money left in the BRRRRs.We fund with a combination of Hard Money and Private Money. 

There are many good books out there on the subject, but asking investors directly helps to supplement that knowledge.Having invested out-of-state since 2004 myself, I have to agree with you that most of California doesn't make a lot of sense from an investment perspective.

Sure- i own one rental house free and clear, cost $80,000. i am 10 years away from retirement and will need to supplement my income with another $3,000 a month . i have $60, 000 cash to invest now.

I'd say capital is the main driver as to how many people buy, and second to that is really their goals--are they shooting for financial freedom, or are they just wanting some additional supplemental income?

Supplementing with flips, new construction or some other form of REI, keeps the interest there and actually pays the bills without having to use your cash flow to live and hence, killing the golden goose.

I rented both sides of the duplex and was supplementing my income nicely.

Why would you choose to supplement your tenants rent.

I don't need a huge passive income currently, but I do hope to build up my portfolio in the years to come to increase my net worth and maybe have supplemental income down the road. 

We have to make sure that the operator has strong supplemental STR liability insurance EVERY YEAR.From an operator perspective:You don't own anything (except the furniture).

(We did opt to get some supplemental landlord insurance for a mere $300/yr. just for added protection.)