Because he has all properties paid off it is important that you take into consideration the opportunity value of that dead equity. 

its a great source of information, other posts, books, blogs, podcasts and the Opportunity is endless!

If they won’t do that I let them know they may be subject to additional costs for collections, and that will hurt their future prospects for rentals as well as other credit based opportunities. 

Is there an opportunity to improve this rate through better management, screening, updates?

But the opportunity came to me thru a friend.

I am being pitched an educational opportunity with the Doug Hopkins group for about $10K with no money back guarantee.

I figured this is a great opportunity to alert others in the Nashville REI community, as well as get some feedback as to what one might do in this kind of situation.

I'm not interested in investing myself but hoping to network with someone who is genuinely interested in pursuing perspective opportunities. 

If it were me, someone who is motivated in a buy and hold strategy, I would decide to keep the property which has many benefits such as growing equity, monthly cash flow, HELOC opportunity, tax benefits as a real estate investor (expenses and depreciations on home), and some others.

I just heard of this thing called Opportunity Zones.