I'm just about to emerge on my third hike up Mount Fuji and the second one with my GPS unit firmly in my hand :). Last year I took the Yoshida trail up and the Subashiri down. But this year I want ascend on the Gotemba trail and descent on the Fujinomiya one. Both not yet on the map.
I just hope no one else is having the same idea.

See this map for more information about the hiking trails:
http://www.pref.shizuoka.jp/kensetsu/ke-000/topics/images/mt_fuji100709.gif