No agents involved.

What other methods should I use to acquire another property? 

This method absolutely works.

Yes, the BRRRR method can work with multifamily properties, and many investors have done it successfully.

Find Brandon's videos on YouTube for the "four square" method of analyzing homes and practice.

When they don't pay you evict them as a tenant rather than dealing with an ejectment which I guess can involved more nuanced arguments in court. 

Mostly due to the fact my spouse and I agreed on her to have zero involvment in any sort of RE investing (and its our home) I think once you have a good 6-12 months of reserve cash (operating expenses for your own life saved as a back up incase things go bad) save enough liquidity to get the ball rolling on your first invesment.

There are many who will argue my methods and that's fine, it's worked very well for me and has been extremely rewarding in ways that cannot be compensated monetarily. 

BRRRR method is also a great way to go - good luck!  

This does not involve the utility company meaning that you will still have to go into the property, read the meters, then individually bill each tenant for their usage and understand the bill is still in your name.