And along those lines, use engine braking going downhill to prevent brake-fade, warped discs and/or overheating the fluid.
At the time it wasn't fully paved and the road turned to slime and huge RVs were doing 3 point turned to negotiate the hair pin corners. It all added up to having to finesse out bikes at speeds slower than engine braking allowed.
With pavement now there the biggest deal will be the rolling road blocks that should never be allowed past the rangers' station.