Originally Posted by
philbob57
I'm not sure I understand how sit-bones - ischial tuberosities - are involved in riding an SMP. They're designed for riders to roll their pelvises forward. The SMP provides some support for buttocks, but most of the rider's weight is meant to be on the pubic rami. Check the US patent application for illustrations - sorry, I know it was available on the web, but I can't find a link.
I recently switched to a SMP T5 as it was the only saddle that got my pelvis to roll forward. I was previously on a Fizik Arione and could never get entirely comfortable or as efficient as I am now.