Look into Infinite Banking. 

AS well as Flippers I fund 100% who make infinite returns.

I was able to lock in a lot of 30 year fixed debt at low interest rates and get infinite cash on cash return.

In regards to why I disregard COC besides as I said you could take all your cash out for infinite COC.

However if I do a BRRRR I can achieve infinite return by extracting all of my investment.

@Casey Mayton I do BRRRR using other people's money so I have infinite returns with RE.

So our cash on cash return is infinite on it. 

And what might be challenging to do in 45 days following a sale is going to be infinitely easier if you can use your seller power to get 60-90 additional days prior to close when you're sure of your sale but not closed yet. 

I know BRRRRing would be the holy grail and let my capital work infinitely, but my feeling is that will be difficult remotely, especially as a beginner. 

As you scale, here's a though to ponder - Your time as an investor is infinitely better spent analyzing markets and deals.You want to move up the 80/20 leverage curve from technician to investor/entrepreneur.In Bridgeport, CT the investment is about 10% of rents collected.