So much of mountain biking focuses on what riders go down or off of, but that is only part of the experience. Mountain biking can be a lot more fun when we add the element and challenge of riding up trails we once thought we would always have to hike-a-bike up.
On some sections of trail in this video I'm clipped in; on others I'm running flats. When the technique is executed correctly, it doesn't matter what style of pedal one uses.
Please remember when watching any demo video that my goal is to help you get better than what you are. For most of my students that has meant being successful on trails not as difficult as the ones in the demo videos. If the techniques I teach work well on more difficult trails, then they will certainly work well on less difficult trails.