@Andrew Steffens the pool of buyers that have six figures of cash (you really need about $150k in cash to buy a $500k STR), have some subject matter expertise, AND want to self manage is even smaller. 

I compile the list of only properties that can gross six figures plus and with prices under $800k.

It is a get rich slower scheme, but with less risk.How do you figure a paid-off property throws off more cash (per month, yes, but in comparison to how much you put down?)

I offer an online payment portal to submit rent payments via ACH or CC - they "couldn't figure out how to use it" so I set us up to accept Zelle payments.

My focus is on uncovering properties priced under $800K with the potential to gross six figures annually.

Now, you need to figure out how to find deals and pay for them.

While you are figuring it out and/or deploying it over time, US Treasuries and certain CDs are paying 5%...and 4% for certain online savings accounts.

This figure is for C class properties.  

I was a terrible negotiator, but I figured, anything under or at asking would be sufficient.

I was a terrible negotiator, but I figured, anything under or at asking would be sufficient.