I take care of all the potential problems as soon as I purchase to reduce unexpected maintenance expense in the future.  

I would venture to guess it takes 3 times the energy to operate a park owned community. 

Thus, making it less attractive since the equity interest in the property is reduced. 

In the seven or so years that I've used this trick, I've never had anyone do any damage to my property.So what tips/tricks do you have in saving time, money or energy with your investment properties?

The following was found in a google search:When septic systems are properly designed, constructed, and maintained, they effectively reduce or eliminate most human health or environmental threats posed by pollutants in household wastewater.

That doesn't make it a bad deal but it will reduce your rate of return.

This has greatly reduced my workload and I don’t think I am missing anyone since the #1 question they ask is if the rental is still available since there are so many stale listings out there.

Until then, you risk spending a lot of time and energy and having the owner sell to someone else.  

I worked with others in the area who I was not happy with.The consideration of this came largely out of a mutual effort between me and my manager to see how we can reduce turnover and costs.

I only have limited experience with them, but so far so good.Are there an investors out there that could purchase your credits before they expire to reduce your burden???