<< Since I'm on this tangent, what exactly is it that Soun does?  Sure he
owns
 the Dojo, but have you ever actually seen a student there.  Where is all his
 free time spent?  What is it he does?  Ditto for Genma.  Nabiki too.  Heck
 the whole Tendo Dojo could be a cover for the families Yakuza activities. >>

It's a well known fact that Soun & Genma play Go whenever possible. For all
we know they could be trying to settle a long-time duel from a world-class
championship in which both men came to a stalemate.. (Not knowing much about
Go, can there be a stalemate?)

The last (In fact the only) time I ever saw Soun training in the Dojo, was
with Akane right before she whacked him while she was thinkning about Ranma .

my 2 cents, anyway.. ;)