Of course, different projects require different strategies. But in general, my approach to plotting is to procrastinate. I don't necessarily want to work out everything that's going to happen ahead of time. Whenever possible, I prefer to wait until I can collaborate with my characters. I ruefully acknowledge that this isn't the most efficient way to write, but it's what works for me.
Procrastination serves two purposes.
First, by keeping myself in the dark as long as possible, I'm better able to maintain my own interest in the story. The reader can sense when a writer is bored, so I try never to be. And without doubt, the most exhilarating moment in the creation of any story is when what I see on the screen surprises me. Characters who navigate precisely through a storyline to some well known destination all too often turn out to be plot robots who never come alive on the page. Even if they do, I worry what they are missing along the way.