Lets face it, some 10 or even 20 numbers you could just write it down on a piece of paper or an old fashioned addressbook...You mentioned:  "I'm assuming PM collect the payments, manages the lease, track tenant activities etc." 

If you do not build homes to keep up with population growth, it makes the existing houses unaffordable by restricting supply and stoking demand.

The key is to figure out what is in demand and under supplied in your area and what your particular property is suited to.

I think you identified in your initial post that you are looking for help finding deals.You did not mention a market that you are looking for or what your criteria is.I think you would get better responses once you supply that information.

Also, with the amount of people hunting pre-foreclosures (wholesalers, agents, individuals, funds, etc.) and scooping them up to flip them, I don't see how the supply could outweigh the demand in the near future.

Over the past 5 years there has been literally several thousand 4 beds and 5 beds built leading to an over supply of this size cabin in low and mid season, which is leading to lower returns.

Supply: The availability of MFH is considerably lower compared to SFH, which can pose a significant challenge when searching for the "perfect" property, especially when personal needs come into play.

TIA I look at these things the most when looking for BRRRR cities - Rent-to-Price Ratio: Look for cities where the average rent is high compared to the average mortgage cost- Population and Job Growth: Focus on cities experiencing steady population and job growth, higher than national average- Availability of Distressed Properties: Look for cities with a supply of pre-foreclosures, short sales, and abandoned propertiesNormally bigger cities in those states should do well, houses are still somewhat affordable (comparatively) and if you do a big rehab it'll pay off

The investor just has to supply a $500 maintenance reserve with the PM to cover any of the smaller issues that require immediate attention.

Your cleaning person should also let you know if you are short or need supplies (i.e. toilet paper, soap,etc) or if anything is broken or missing.I would create a checklist for the cleaning person of what they need  to clean every day, what needs cleaning once a week, and what needs cleaning once a month.