I have multiple rentals and in a short period of time, I had one eviction and clean up from that along with lost rent, another had the washing machine break.

That may sound pretty good...until you discover that their net worth is decreasing at a rate of $2 million per year, and they've got $100 mil of adjustable rate debt on a portfolio of D class properties that forces them to work 80+ hours per week just to keep the whole thing afloat...Investor B tells you "my net worth is $1 mil" --to many successful investors, that sounds like a relatively insignificant net worth...but, investor B owns a portfolio of A class properties with zero debt, professionally managed, their cashflow is $500k per year, their net worth is increasing at a rate of $1 mil per year, and they only have to work about 1-2 hours per week to keep their machine going.Personally, I'd MUCH rather be investor B than investor A (even though investor A's net worth is 10x of investor B's).So yeah, tracking net worth is advisable, but it's only a small part of what an investor should be tracking and modeling, and net worth alone might not be very indicative of an investor's success...An effective investor creates models to help them strategize, and those models inevitably include net worth, but they include a LOT more than just net worth (and as a result, they can be quite time-intensive to create)...but, the things that are most worth doing usually ain't easy...

One screening process I found useful was to set up a message line for people to call into on an answering machine.

under the kitchen sink, beside the hot water heater, and near the washing machine.  

Tiff Rent as is, if your biggest complaint there is no washer and dryer, then install the lines and vents DO NOT supply machines.

If you want your BRRRR machine to be perpetual - try for 30% off ARV!

They are still using the washing machine and does not pay water bill.

Regular Hot Tub = No.Hot Tub Time Machine = Yes and be thankful for your good fortune. 

A website could be a 24/7 lead machine.  

I know you feel like you ruled out the washing machine, but I've had an issue where water from the washing machine traveled behind the washer, through a chase space, then into an adjacent closet in my basement.