Racing involves going around the course - strength is required upwind and down. There is no point in being a star going upwind without the ability to come downwind with similar abilities. Whilst technique is really critical to success, very often tactical decisions are able to get you back from an impossible position and back into the race. Whilst there is undoubtedly more gains to be made in skiff sailing with asymmetric spinnakers, the gains that can be made in conventional boats are huge