Bruce, glad to hear you like my book. There should be a fourth edition sometime though not in the next year or so.
The Yukon hike was wonderful. There are virtually no trails so route finding was interesting and some of the terrain is very challenging. Often the route was determined by the nature of the terrain. The sense of wilderness is tremendous of course. And there are very few other hikers, none in some areas. At one point I went ten days without seeing another person.