The video nochaser posted of Berger is great, but you need to make the turns even tighter/quicker and have the skis cross the fall line at bigger angles than those to hold a fall line in steeper natural terrain in order to gain the speed control needed. Berger may be able to carry that speed with that turn radius in steeper natural terrain, though I doubt it, but he's special. :)
nochaser is also right on then he says "There is a lot of fore/aft movement going on here." I would even say that's an understatement. The movements you can't really see or feel by watching the video are what really make the turns happen.
You want to practice making short turns by staying in the groomer lane at the edge of the steepest groomed your area has. The snow is usually softer here as the other skiers scrape and push any loose snow to the edge.
It's really difficult to concentrate on more than 1 thing when making short turns IMO, so my suggestion would be to focus on the movements at the turn finish. This is where your going to gain most of you speed control and where you can regulate it the easiest in case your speed is fine and you don't need to scrub any speed / energy.
Snap your pole plant with your wrist crisply and firmly at the turn finish. This marks the end of the turn and beginning of the next and will allow you to focus and sync other movements you'll need to make.
At end of the turn, the pole plant, drive your inside heel down and forward slightly as you fully weight the turn finish while simultaneously lifting your toes of you inside foot.
This will generate and focus an incredible amount of energy at the turn finish and transfer the pressure on your skis from fore to aft. Immediately after your pole plant and inside foot drive, flex your knees and pull both feet back quickly, this movement will naturally lift your heels and get pressure back on your toes (aft / fore movement) to release the turn and start initiating the next. You don't have to pull your feet back very far, just quickly and firmly for a moment.
At first, the this energy burst at the turn finish may throw you into the backseat, if your chest is to far back, or on the opposite end of the spectrum, your ski shovels may hookup to quickly throwing you over the handle bars. Be aware of this, you will get your balance centering figured out with practice.
Harnessing this energy at the turn finish is vital to linking very short brushed carved turns because not are only are you scrubbing speed with the firm edge set, you will need/use some of the energy to float you weightlessly into the initiation of the next turn. You will "float" into the top 1/3 of the next turn as you roll your skis onto the new shovel edges and get them hooked up.
Here's a video of my QCT's (quick brushed carved turns) on the groomed.
Not only am I skiing much slower than Berger, this is close to the speed I try to hold in natural terrain, notice how square I get my skis across the fall line at the turn finish. Obtaining these larger angles is very important down a mogul run.
Remember, you are only fully weighted at the turn finish, similar to bouncing on a trampoline or skiing powder which is actually the feeling I'm trying to mimic when making these turns on the groomed or in the moguls. Float....Touch.....Sting....repeat...
More video of the same turn, although done better.
Some video of yourself making brushed carved turns on the groomed would be very helpful.
Edited by Nailbender - 1/12/14 at 2:32pm