I agree with AFDavis. Although, I'd do it the other way around.

Remove the backward honing strokes first. Those strokes are used to remove a burr, and IIRC, Glen uses them on his 30k shapton. I could be wrong about that though.

I've tested the back honing strokes to finish and edge, and to this date I've not had any results that I would deem even close to acceptable. I continue to hone with a forward/cutting motion. Especially at the 8K level.