In the high-stakes, high-speed world of freestyle mogul skiing, the margin between an Olympic podium and a forgettable run is measured in milliseconds and micro-adjustments.
For Harald Marbler, a veteran coach with over 23 years of experience on the World Cup circuit, capturing those margins requires more than just a keen eye — it requires the best technology available.
Currently in his eighth season as a coach for the Swedish National Team, Marbler is the self-described “tech nerd” of the freestyle community.
It is a title he wears with pride. From his early days coaching in Austria to his four-year stint with the U.S. Ski Team, Marbler has always hunted for tools that simplify the complex. For the past four years, Marbler has leveraged Onform, a video analysis platform, to further dissect and analyze what separates a good run from a great run for some of the world’s best mogul skiers like 2022 Beijing gold medalist Walter Wallberg.
Aiming for Gold: The Road to the 2026 Winter Olympics
As the winter sports world turns its attention toward the upcoming Winter Olympics in Italy, Marbler finds himself at the helm of a powerhouse roster.
Wallberg is the reigning gold medalist in men’s ski moguls, with a score of 83.23 in Beijing. At just 25 years old, Wallberg enters the 2026 games as a favorite to repeat. Marbler also has a young gun on his roster in Filip Gravenfors, who has been top three in the world for the past two years.
Additionally, Rasmus Stegfeldt brings a lot of potential to be one of the best in the world, as well as fame as an internet personality and influencer with nearly 175,000 followers on TikTok and 100,000 on Instagram.
“Medals are the expectation,” Marbler said. “The stakes are high and there’s a lot of pressure on guys like Wallberg, but there’s a lot of potential with this team.”
To meet those expectations, Marbler’s coaching philosophy centers on constant evolution. He doesn’t believe in “drastic” changes, but rather a relentless development of methodology.
“I’m always looking for new things, you always need to keep on learning and looking for new stuff and what can help there.”
Preparation for the 2026 Winter Olympics involves bridging the gap between an athlete’s subjective feeling and the objective reality of their performance. In moguls, where the terrain is brutal and the speed is dizzying, a skier’s perception can often be skewed.
“It’s very common that most of the courses feel way rougher than they actually are,” Marbler says. “Mostly it’s, ‘Oh, I thought it looked much worse,’ or it can be the other way — ‘Oh, I thought it was much faster, but no it wasn’t.'”
Decoding the Run: High-Tech Video Analysis with Onform
The centerpiece of Marbler’s technical arsenal is Onform, a mobile video analysis app that has streamlined his workflow from the lodge to the finish line.
In a sport where coaches used to struggle with cumbersome software like Dartfish — which Marbler describes as “complicated” — Onform offers a level of agility that matches the athletes on the snow.
One of the most significant breakthroughs for Marbler has been the ability to integrate high-quality camera feeds directly into his iPad using a simple cable and transmitter setup. This allows him to bypass the unreliable Wi-Fi networks often found at Olympic venues and training sites.
“I can tag the skiers before they even push out the gate. By the end of the training, I just search the name, select them, and they’re shared.”
This real-time capability has changed his behavior on the slope. Where he used to squint through a tiny camera viewfinder, Marbler now coaches primarily through an iPad using the Onform app.
“I never really look up anymore. I only look at the screen and I see everything so much easier and much better,” he said.
The impact on Marbler’s athletes is immediate. While some skiers prefer to stay in the “flow” during training, others, like Olympic champion Wallberg, are highly analytical.
The Evolution of Tech in Winter Sports
Marbler has long incorporated technology in his coaching, but it has sometimes been met with criticism.
While coaching the U.S. Freestyle Ski Moguls Team from 2010 to 2014, Marbler opted for simpler and lower-cost alternatives for video playback and analysis like iMovie and QuickTime Pro over more expensive software licenses commissioned by the national team.
Today, the landscape is different. The freestyle ski mogul community is a small, collaborative group, and Marbler’s utilization of Onform is catching on.
He notes that several other national teams have switched to the platform after seeing his setup. Even the U.S. team is taking notice, with head coach Bryon Wilson impressed with Marbler’s video analysis approach.
For Marbler, the tech isn’t just a gadget; it’s a requirement for professional excellence. He encourages other coaches to embrace emerging technologies to enhance their coaching.
“The video is so important, I always review the recording before I even speak, so that I say the right thing and find the right thing to focus on and improve.”
As the Swedish National Freestyle Ski Mogul Team heads to Livigno, Italy, for the 2026 Winter Olympics, Marbler will be there — iPad in hand, cable connected — ensuring that every run is captured, analyzed, and perfected in the pursuit of Olympic glory.
Such a great use of technology!