Racefox Ski Tryout is a capacity test which gives you a good idea of your current ability as a skier. During the 8-minute test, Racefox will analyze your double poling technique and Ski Power. Your Racefox coach will make an easy-to-understand summary of your strengths and weaknesses and suggest exercises that are right for you. It even predicts your capacity and which starting group in Vasaloppet that corresponds to.