Can a fully loaded 739 not depart SFO Runway 1s, even on a cool day? Made the endless taxi to 28R today, and then indeed a really long takeoff roll. Is this all about the very long yet very low 739, which limits the rotation angle? If so it must not be much fun to fly such an underpowered airplane. Kind of weird to have a guppy have to share the departures with A380s.