And agents are legally prohibited to engage after closing - at least per Wisconsin State law. 

I own properties in DC (where I live) and I used to own in Flagstaff. 

I have used Appfolio as a leasing agent to put properties up for lease, screen tenants, and rent them out.

I'm an agent in addition to being an investor.  

My current insurance agent only deal with residential insurance companies.

the ones that look good in Ohio or Alabama or whatever come with their own challenges. 

Quote from @Kyle Carter: The comps that come from local real estate agents will be the best for this one.

It’s a market with its own set of challenges, but it’s also packed with opportunities if you understand the nuances.Happy to help if anyone here has questions about Detroit investing or wants to explore what’s possible in the market.Looking forward to continuing our conversation, Mattin!

Being an agent will take time to replace your income, 1-2 years.

If you are a legal property manager in your state the owner should have the unfettered ability to allow you to act as his/her agent to enforce the lease, whatever provisions they may contain plus whatever your state laws allow.