Multi family attracts me because of the potential it offers to increase one's cashflow and net-worth tremendously in a relatively short amount of time compared to traditional means - at least this is impression I'm getting from numerous media/social media sources.

Are there any best practices or methods to establish relationships with banks as a way to get around repeated credit checks ? 

No, I don't, so if someone calls asking about the BRRR method or flips, I'm probably not the agent for them. 

I text him numerous times to pick up his remaining stuff but he doesn’t pick it up and I miss the bulk pick up that month.

This is a perfect example of the "boring" stacking method to grow your portfolio.

I've seen numerous posts here that it's slim to nil a lender will directly deal with a private investor with no history.

New flooring, new paint, new deck, new landscaping (zero scape in front yard), new concrete including expanding the driveway to fit 3 cars, miracle method the tubs and shower surrounds, glass shower doors What was the outcome?

Anyone has done the BRRRR method with operating the homes as short term rentals in non vacation markets?

The Airbnb app hides phone numbers, but you can creatively leave your number by posting 1 number at a time or another method.

There is no real cause of concern when a mortgage gets assigned numerous times.