Establish long-term relationships with them.My career has been a wild ride of experiences and oh-so-valuable lessons.

For simplicity, let's say 5 rentals or less you can get away with excel or other free REI-specific software. 

Quote from @Catherine Sanchez: Do Not Call Rule #10: https://www.ftc.gov/business-guidance/resources/qa-telemarke...If the individual contacts you first, they have established a business relationship.

I have excellent credit, $100k in savings, the lot value to use as collateral and about $500k equity in my primary residence. 

Usually you build a relationship if you treat them right and it'll grow.

I have two excellent property management companies please direct message me for the info 

@Alan Asriants Excellent advice for anyone but especially newbies.

If the buyer is an investor and or company, and no fiduciary relationship has been expressed or implied,  could they pay the 4th party a finders fee without any legal implications? 

Yes, I worked with an excellent real estate agent who specializes in investment properties.

The RTP in RTP(no pund intended) will tighten up, this is an excellent market.