Seen a YouTube where the owner/principal provided a process to scale quickly.

It's a great tool to help scale your portfolio, but you need to set it up correctly on the front end.

Choose your property wisely, multi-unit properties like triplexes and fourplexes offer potential economies of scale and income diversification.

I am not at the point that I can take advantage of economies of scale, so I plan to continue managing my properties.

I'm moving into a new house hack duplex in Gahanna this weekend - the strategy has helped me scale. 

You scale originally.

You have to put in the effort, demonstrate the skills, and spend the time to scale up.  

This "strategy" does not scale.

You’re borrowing against the equity in your home, so the money is not income but rather loan proceeds that you’ll need to repay.The pros of a cash-out refinance for most investors include the ability to build their portfolio and scale their real estate investment business.The cons could be trading a lower interest rate for a higher one and increasing your loan-to-value (LTV) ratio.

I need capital to scale and grow my business further.