The Zipper Line: Straight Down the Trough for Control in Moguls

Use the zipper line to ski straight down the mogul trough, then widen your line on the bump faces for better control and rhythm in expert mogul skiing.

What This Cue Means

When you hear “the zipper line goes straight down the trough,” think of it as your main highway through the moguls. The trough is that narrow channel between the bumps, and skiing straight down it keeps your line clean and efficient. It’s like threading a needle—your skis track a direct path, minimizing unnecessary side-to-side movement. This helps maintain speed and rhythm, which are crucial at the expert level where terrain can get unpredictable.

When to Use It

But skiing straight down the trough isn’t about holding a rigid line all the way. That’s where the second part of the cue comes in: “For control, ski a wider line using the bump faces.” As you pass over the moguls, you don’t want to stay locked in the trough the whole time. Instead, use the bump faces—the sloped sides of each mogul—to widen your turns. This gives you room to absorb the terrain, manage your speed, and adjust your balance. It’s a subtle but important shift from a narrow, direct line to a slightly wider arc that smooths out your ride and prevents you from getting caught or thrown off by the bumps.

When done right, this technique feels like a controlled flow. You’re not fighting the terrain or bouncing wildly; instead, you’re guiding your skis with precision, using the trough for direction and the bump faces for modulation. Your upper body stays stable, your legs absorb the terrain naturally, and your turns feel crisp but adaptable.

How to Practice

A common mistake is to try and stay too rigidly in the trough, which can lead to loss of control and a jerky ride. On the flip side, some skiers swing too wide around the bumps, losing the efficiency and speed that the zipper line offers. The trick is to find that balance where your line is mostly straight down the trough but opens up just enough on the bump faces to keep you smooth and in control.

If you want to explore this further, check out the expert mogul skiing page for more on line choice and rhythm. Also, related cues like “Absorb with your legs, not your upper body” and “Look ahead, not down” complement the zipper line by helping you maintain balance and anticipate terrain changes.

The zipper line is a practical cue that helps expert mogul skiers stay efficient and controlled. Turn Lab highlights it as a key technique to refine your line choice and manage the bumps with confidence.

Frequently Asked Questions

What exactly is the zipper line in mogul skiing?

The zipper line refers to skiing straight down the narrow trough between moguls, like a zipper’s teeth, focusing your path directly downhill.

Why should I ski a wider line on the bump faces?

Skiing wider on the bump faces gives you more control by managing your speed and absorbing terrain changes, preventing you from getting trapped in tight spots.

Can I use the zipper line on beginner moguls?

The zipper line is more effective on expert moguls where precision is key; beginners often benefit from wider, more gradual turns to build confidence and control.

Practice What You Learned

Turn Lab organizes mental cues, drills, and progression milestones into a structured path from beginner to expert. Free for all beginner skills.

Download Free for iPhone
Get Turn Lab Free