
   I need some advice on having someone ride pillion with me on my 750 Ninja.
   This will be the the first time I've taken anyone for an extended ride
   (read: farther than around the block  :-).  We'll be riding some twisty, 
   fairly bumpy roads (the Mines Road-Mt.Hamilton Loop for you SF Bay Areans).

I'd say this is a very bad idea - you should start out with something
much mellower so that neither one of you get in over your head.
That particular road requires full concentration - not the sort of
thing you want to take a passenger on for the first time.

Once you both decide that you like riding together, and want to do
something longer and more challenging, *then* go for a hard core road
like Mines-Mt. Hamilton.

In any case, it's *your* (moral) responsibility to make sure that she
has proper gear that fits - especially if you're going sport
riding.