Equipment

• Choosing a longboard that corresponds with your physical dimensions will help to decrease the likelihood of speed wobbles. Hold the longboard vertically in front of you with the tail of the deck touching the floor. Choose a longboard with a length that roughly corresponds with your inseam. Most longboards have a length that ranges from 32 to 40 inches. However, certain longboards can reach length of 5 feet or more. While longer boards will help to prevent speed wobbles, the added weight will actually increase your speed capabilities.
  
  

Turning

• Avoid riding in a straight line for an extended period of time; this will cause your speed to increase. Perform wide sweeping turns across the riding terrain. Look over your shoulder to avoid collisions with oncoming traffic or fellow riders. According to "The New York Times," downhill longboarders drag their hands across the ground to control their momentum and prevent speed wobbles. Make sure to wear a pair of reinforced longboarding gloves to keep your hands protected during the dragging technique.
  
  

Stance

• Employing the proper riding techniques will help to prevent your longboard deck from wobbling during high-speed turns and maneuvers. Spread your feet about shoulder width apart to maintain a balanced stance and keep your body weight evenly distributed across the longboard deck. Bend your knees to a 45-degree angle to lower your center of gravity. Hold your arms parallel to the ground to increase your wind resistance and slightly decrease the speed of your longboard.
  
  

Riding Terrain/Braking Technique

• The riding terrain will directly affect the speed of your longboard. To maintain a comfortable speed throughout the learning technique, novice riders often choose a mellow terrain that features a gradual slope. Another effective way to prevent speed wobbles involves learning a specialized braking technique. Lower your dominate foot toward the ground as your longboard speed increased. Drag the sole of your shoe across the pavement to quickly decrease the speed of your longboard. Perform the braking technique while approaching a hairpin turn in the riding terrain.