The one channel people may be blessed with ease, yet what I had to learn or relearn at one point is that you don't need to be on a single channel to get where you are going (or even particularly know what that point is - in that if you knew it already you might be ready for something bigger, better and greater or at least more interesting). A smile for that thought.

I like to draw the ideas that come to me on paper and begin to connect them with lines and then as they cluster together, put them in order with numbers and or letters, and begin stringing together the beads of ideas and their dependent fringes of ideas to get a draft.

I don't worry about it. Editing happens after the first bunch of stuff is out. Anything I cut goes into a wishbox of sorts for use another time, and - having all the ideas out in front of me - I can move and remove pieces til the perfectible shape emerges.

In short, don't waste time swimming in just one channel - all the cross flow can contribute and you can trim back after that. hope it helps, K