I have invested in a Corbin passenger seat which comes with a bracket hole for a backrest. When my daughter wants to ride with me, I just remove my the Corbin backrest from my Golwing and stick it into the Busa's passenger seat. Then she and I don't worry about holdons during accelerations. Wife doesn't ride with me since she took the course and got her own bike last year, she really enjoys biking on her own and does not miss riding backseat one bit. She says she should have done it years ago. And I think girls ridind their own machine is quite "exciting". The more, the merrier. So my pointer to you is... "grab the handlebars!!", we'd like to see more girls riding on their own!
Mike B