All writers are pantsers when it comes to the finer grain structure of a novel. No one can outline down to the sentence level. All honest plotters will admit that at least some of their best ideas have come during pantsing bouts. You just have to dive in!
There's no getting around the fact that as a writer you must produce your craft either on paper or on a digital device of some kind. Even if you subscribe to voice recognition software where your dictation becomes your written work, there is time and commitment involved in creating all forms of writing. How, then, does the serious writer stay on task?