Then when things go to hell they walk away and pretend they had no involvement with the Property Manager even though they facilitated countless transactions positioning themselves as the owner. 

To Mike's point, it can also harm your ability to move on with a new partner who probably will not be thrilled to learn that you're still financially involved with your ex... 

After all if you get the deal done, you are creating more opportunity for everyone involved!

What would you recommend to someone who wants to get involved? 

Renewal shouldn't involve the agent.

It's a tough situation for all parties involved.

Having an expert landlord attorney involved will help you a lot.As for the actual question, it is very difficult if not impossible to "stop" a tenant from damaging your property, because you are not inside the property to know what they are doing.

If we let 30 RVs on the property it may attract too much attention, but being conscious of neighbors the rural area takes on more of a 'ask for forgiveness rather than permission' vibe for anything that doesn't involve permanent structures.   

If I wanted to be more involved I may have considered starting a real estate biz like wholesaling, flipping, property management, etc.So, I would first determine how much time you want to 'invest' along side that $200k. 

Often times the transaction between the DST and the REIT involve a significantly lower commission for the brokers.