I am an experienced investor and unexpectely find myself managing a duplex myself and wondering if there is a small landlord (aka inexpensive) simple solution for marketing, background checks and lease creation that markets on zillow? 

Off Market, and KREIA are just a few places to look. 

If they tenant is $300 below market, that's costing you $3,600 a year.

Are the tenants paying market rents?

@Lucas DeAndrade how much knowledge do you think you've accumulated about the Akron market?

Purchase price: $77,000 Sale price: $85,000 Contributors: Peter Vekselman Partner Driven teamed up with Jamari Sprueil to secure this off-market deal in Decatur for $77,000.

Or do you want to generate off market deals.

The problem with metrics is that there is no one metric that fits all investors and situations.Looking at some of the enervation shows on TV, the price they pay and what they put into the property would never work in the markets we have experience in.  

Off market deal from a previous listing a year prior.

We manage several hundred rental properties throughout the San Diego market and I found your post very interesting.