I was looking at the specs for the CA speed boards and they have 15 mm of tail rocker and zero flat. They also mention V but no numbers for it.
This seems counter to conventional dogma for a speed board. They are undoubtedly fast though, as Slowboat has demonstrated. What's going on?
You sure that's not 1.5mm. I very much doubt they have 15mm
As I've already said on the cutouts thread, Slowy said the tail rocker is mainly there for board trim, it's only behind the back footstrap, so stops any lift behind the rider forcing the nose down and increasing wetted area.