When we do rent it out, we plan to add a flat fee for the included electric.

As a student of history and electoral politics, my hypothesis was a flat no, and the research did verify at least most of my assumptions.However, I could have written a book about this topic, and I really don't think I can answer the question succinctly enough in 2,500 words.

You can succeed even now if you have enough money so you are in control of when to sell, and your tenants are screened more than well.  

We don’t know any PMCs to recommend in the area mentioned, but since selecting the wrong PMC is usually more harmful than selecting a bad tenant, you might want to read our series about “How to Screen a PMC Better than a Tenant”:https://www.biggerpockets.com/member-blogs/3094/91877-how-to-screen-a-pmc-better-than-a-tenant-part-1-services-and-processesWe recommend you get management contracts from several PMCs and compare the services they cover and, more importantly, what they each DO NOT cover.

Plenty of areas of FL have seen record levels of new supply hit the market which has impacted rental rates, either making it flat for the past 1-2 years or even dropping some.

It certainly could improve your cash flow but it won't help with finding prospects, screening tenants, maintenance, deposit dispositions, etc. 

So, the first question they usually ask a PMC is about fees - instead of asking about services and HOW those services are executed.EXAMPLE: PMC states they will handle tenant screening – what does that specifically mean?

Most owners don't screen their property managers and hire someone they already know (e.g. their sales agent) or someone they find online with cheap fees or a slick sales pitch.I offer referrals along with three promises:1.

Posting the property and finding/screening tenants?

I see it now, yes for sure as Theresa said it was probably just to create a little more horizontal flat space behind the house.