One Skate is also known as Gear 3, or V2 Skating.
In Canada, we say One Skate because there is one poling action for every leg push; there’s a 1:1 ratio of pole pushes and leg pushes.
This technique is ideal for gentle terrain: slight uphills, slight downhills and flats. Powerful skiers can one skate up substantial hills.
If you’re new to skate skiing One Skate and Offset are the 2 techniques you should focus on. Use offset for hills and discipline yourself to use One Skate as much as possible the rest of the time you’re skiing.
First focus on the timing, then work on using your entire body effectively. Notice the amount of flexion and extension in the body and legs in One Skate. That’s important.