Pedal Wench - do you sit only on your sitbones in the aero position? When I'm in an aggresive aero position - down on the aero bars for long periods of time, I'm so far forward, that most of my weight is not on my sit bones. Now, on my road bike, yes, but not on my tri bike. Should I be completely on my sit bones on my tri bike? How is that do-able? Thanks!