Their online payment system doesn't recognize non traditional banks (credit unions) so your hit with $27 fee to pay with debit or have to take time out of your schedule and go to a Western Union for a $3.95 fee.

The more traditional way, assuming you actually have adequate equity in your rental, is to take out a HELOC on the rental. 

It can be more capital intensive up front and take a little more time than a traditional BRRRR but it gets you started.  

I will answer as it relates to traditional BRRRR, in the general case there are additional options.  1) Do not perform maximum cash extract.  

Why are you looking at PML vs traditional financing for this type of deal? 

They can separate themselves from traditional real estate investors by building a robust EIN Corporate Credit ("Ever-Increasing") investment infrastructure that allows for faster portfolio expansion and more sophisticated financial maneuvering.

There are some services like Guest Ranger but we do not screen in the traditional sense.Make your house rules clear and make it clear they are enforced, then they tend to screen themselves. 

Part of what you are describing is traditional seller finance.

By avoiding traditional financing, we moved swiftly to secure the property and maximize its value for a quick resale.

I am very familiar with how to list a traditional, non-furnished house for rent on Zillow.