The spring-loaded skeg is standard equipment on your Versa Board; deploy it on flat water where wind can nudge you off course. It will help keep you on a straight line. Retract it in river current to have more responsive turning capability. The spring-loaded action protects the skeg from damage when encountering submerged hazards and debris. The skeg retreats into the hull and redeploys once it clears the obstruction. Fool-proof damage control.