It's a strategy that has proven effective time and again.Five years is a solid timeframe to account for market fluctuations and ensure profitable sales.

How long a stretch does it run to provide proper slope to drain the water effectively?

They don’t effectively target motivated sellers.In fact, the market is saturated with these outdated and inefficient approaches.

Some owners would prefer a clearly defined floor even at the cost of not rising to the highest ceiling.While I hate to say it, there are also property owners who lack either the time, knowledge, inclination, or skill to want to manage their property effectively.

They different compounding effects.

This means you’re effectively living for free, or close to it, while building equity in your property.Low-Cost Entry into Real Estate InvestingBecause you're living in the property, you can qualify for owner-occupied financing.

Address issues like a squeaky basement shower and squeaky floors by marketing the space effectively.

This will primarily effect tenant's sales and your ability to re-lease when tenant moves out.You have building risk: primarily, how easy will it be to re-tenant if your tenant goes dark or leaves.  

The irony of the 1% "rule" is that those who could even use it effectively don't need it, ie if you need to spend more than 30 seconds thinking about whether it fits the guidelines you're probably not educated enough in RE to use it anyway. 

To this effect, I did hold bitcoin for a period of time, with this lens (I had a moderate cash position and diversified across equal parts bitcoin, gold, and dollars as an inflation hedge).