I am always looking for personal investment opportunities and my work allows me to closely monitor the pulse of the market and monitor values and markets (an property types) with attractive margins or potential.While I do maintain a Broker's License, I do not actively pursue listings or representations.  

(he said he also monitors forums where he see's his name mentioned )   He would definitely know some of the "heavy hitters" in this REI game and be able to point you in the right direction.  

If they were great, long term tenants and this was the first problem, my advice woule be to suck it up and tell them that next time something like this occurs, they'll need to cover the cost, it's their responsibility to monitor leaks, etc.

I will also monitor him paying rent very closely.I am very interested in hearing suggestions from the community as to how I should handle this situation moving forward.

3G submeters that can be monitored online start at around $500 each then usually $200-300 each for a plumber to install.

One difference with the Slate card is it includes a tidy interface for monitoring FICO score (experian).I've had people recommend Home Depot for contractors, but their quotes have always been higher than what I've found elsewhere.

How well you know the person and how accurately you can monitor costs become big factors in the equation.  

Then make sure whatever purchases you make get paid on time and you can go to D&Bs website and sign up for their free or cheap monthly business credit monitoring to see the scores get created.It's challenging at first but once you're established, it tends to snowball. 

Some parks are on municipal water while others have their own water well and if over certain number of tenants are required to do regular monitoring/testing of water quality.Check the status of property taxes, insurance and other bills paid by the park owner.  

It is labor intensive and if you are not experienced you have to do your due dilligence and monitor the quality of the work you are receiving.