So tell this . . . what percentage of your deal will be cash at closing deals? The answer, obviously, is one hundred percent of them!
If flipping properties is your thing, its likely that you'll have designed and implemented a system which results in you getting paid each and every time a property gets closed.
By the way, did you order the course? If you did, you know that their method for getting cash back at closing has more to do with simultaneous closings. Not a real good thing to be teaching new investors if you ask me.
Double closing often require your moon to be in Jupiter on the day closing is scheduled, and if the real estate gods don't happen to be on your side that particular afternoon, sorry Charlie, you're flat out of luck.
Did I mention that it rarely makes sense to design a game plan that requires an alignment of the planets before you get paid?
Yes, I thought so.
Summary
Getting paid at the closing table when you buy isn't particularly difficult or in any way a well kept secret only available to those will to offer their souls (and a couple of bucks) to the real estate gods currently ruling from on high numbered, late night cable channels.
Cash back at closing, for the smart investor, is a virtual given if that what he decides he wants to happen.
It is not a requirement more often than not but if desired, can be designed into the game plan as needed.