In this post I'll point out the key "Essentials of Slalom Skiing". These are common amongst the top three or four racers. The racers that keep these elements together for most of their runs usually are near the top 3. For the racers that lose or where the Essentials break down, time is lost and positions drop.
(Above) Felix, again exceptional skiing. Inside ski tipped and leg bent or flexed. Notice his hand is down on the snow, but he is not leaning his upper body toward that side. Many of the big errors happen when the upper body leans in, this is called "lack of counter balance". Many slalom skiers skied out of the course in the first run of Kitz because they leaned their upper body away from the outside ski. I see this in juniors often, rather than creating "Counter Balance" with the upper body, they are trying to reach for the snow with the inside hand. Big mistake.
The Essentials discussed here are: Tipping, Flexing, Counter acting and Counter balance. The only one of the 5 Essentials we did not mention here is Fore/aft Balance. Which I have discussed on the Blog in other posts. With some training these Essentials are recognizable and easily learned by skiers.