Unless you've been on injected snow at a world cup race, it's really hard to fathom how damn hard/slippery the surface is, and how sharp your skis need to be.
I've seen people accelerate while sideslipping, coaches and support staff bail into the fencing, and spectators (usually drunk
) fall instantly on their asses when they duck the b-netting at the end of a race.
Skis will usually be re-sharpened (diamond/ceramic stoned) after just 1-2 training runs on this type of surface. Side edge angles are often in excess of 4 deg based on event, ski, surface, and preference. So the tech skis have a very short lifespan!
I too would be interested in hearing more about the serrated edge
. I wonder if this approach trades off contact surface for better penetration...?