Please, anyone, correct me if I'm wrong here . . .
From an aerodynamic standpoint, doesn't it make sense to have your hips higher,
instead of lower, such that the profile of your back (viewed from the side) is
less steep? I've been led to believe that this will promote smoother airflow and
less vacuum behind the rider, and therefore less drag, compared to having a
lower seat.
If this is true, then it suggests that a thicker (higher) seat cushion would be
advantageous. Therefore, more padding is good, and may help increase comfort
for the rider. A thick and soft-enough seat cushion may replace the need for
(metal) springs in or under the seat itself, if the bike has a "rigid" frame with no
rear suspension.
tallguy