The other form of snowboarding is called Freeride. It focuses on going fast and carving your own trails out of a mountain. Although I upgraded my board to increase my rotational velocity, I sacrificed my ability to carve at speed. The edges of a snowboard are metal, and allow the snowboarder to apply a resistive force using their legs and friction to slow down their body. In this case, a longer snowboard would provide for a more stable ride because the force is applied over a larger area. This reduces the pressure on both the boarder and the ground. The increased friction with longer boards also makes ice easier to handle.
This video features David Powell, who broke the snowboarding speed record with 202 km/h !