The way the solo reverse sweep is described in "Canoeing: A Trailside Guide by Gordon Grant" differs from both my intuition as well as the way I've seen it described in other books. It involves switching from the backface to the powerface slightly behind your body (apparently to avoid backward thrust, although I don't understand how that would be accomplished.) The relevant paragraph from the book:
Is the switch of the paddle face common practice for this stroke? Why would it not tend to "push the boat backwards", as claimed in the book.