The benefit of this kind of outlining is that you discover a story's flaws before you invest a lot of time writing the first draft, and it's almost impossible to get stuck at a difficult chapter, because you've already done the work to push through those kinds of blocks.
I got up with my wife, I sat down at the computer when she went to work, and I didn't stop until she got home.
When I decided to take writing seriously, I did a lot of reading and analyzing of the books I liked, and came up with what I thought were pretty sound plotting and structure basics.
For the novels I wrote before selling anything, I didn't outline much. I had a vague idea of the story.
I'm a fan of short horror fiction... in fact, the most memorable horror I've read is of the short variety... but I have a hard time pulling it off myself.