If you plan on being a very active investor, it's possible but you will need to keep the velocity of your money up high.

One of the issues in the “calculations” of the “velocity” believers is that they do no accounting for the time value of money.

Price inflation is more a function of velocity than supply of money, and they've found that more printing does not equal more velocity.

The key is velocity—keep your money moving and growing.

This suggests solid demand, but there’s still room for price adjustments—key for investors looking to acquire properties below market value or add value through renovations.Market Velocity & Turnaround TimeHomes are selling in a median of 46 days, meaning well-positioned deals can move quickly.

Is is the extra principal payments, not velocity banking that matters.Of course the guru just happen to be selling these velocity banking services... 

we have to have pre sales my bank will only give me a certain amount of spec loans but unlimited amount of pre sales. its the only way to keep velocity when you have a larger project like us ( 90 homes) We have been blessed no questions about it.. we made some critical decisions when we started that now look like genius moves :)

Notes are all about velocity of money - faster the money comes in the more valuable the note.

Quote from @Carlos Silva: Has anyone tried velocity banking?  

(b), if this method is used year after year, then $10K chunks of money NEVER have to come out of anyone's checking or savings account, because they are effectively using the creditor's funds while repaying them back over the course of a year using this "Velocity Banking" strategy.