I don't like to pin things to the page -- I can do it, but it's like... dissection; you can't do it on something that's alive. I did try to write outlines when I first managed to finish novels -- but by the time I hit the middle of the first chapter, I was already revising the outline (and I never got as far as the ending, because that's the one thing that's carved in my mind).

Also: Outlines just terrify me. I understand that most editors in our genre consider outlines to be less than entirely accurate representations of the book they're actually buying -- but still.

I am, otoh, perfectly happy to write the first four chapters of anything and send that along with almost no outline.