Let me call this off-the-cuff writing so I can combine the blog chain and the A-Z challenge again.
Sometimes I feel that many of my blog posts are off-the-cuff.
Other people on the blog chain have commented that the pantsing method requires many revisions, and I've found that to be my experience too. However, the key is being able to get through the first draft, no matter how messy it is. I've found for me that I need a beginning, an end, and a couple ideas of scenes along the way to get started. I've also found that while I can win NaNoWriMo, my momentum screeches to a halt on December 1st. Maybe I wear out my desire to finish the story by forcing myself to write at such a fast pace.
For more on off-the-cuff writing, check out Kat's and Kate's responses.