20100523 Copyright onEdition 2010© Free for editorial use image, onEdition GSS Mermaid Team Pilot, David Hobson, with Navigator, Kirsty Clark, from West Sussex racing in round 1 of the 2010 SuperStock race in Penzance. SuperStock is to powerboat racing what NASCAR is to cars. Quite simply, the fastest growing and most exciting form of marine motorsport today - and the most accessible. The essence of SuperStock is close, production-based racing based on identical boats ra