Sonar, a.k.a. Hullaballoo, a.k.a. Mini-Simmons: As might be inferred from the chip shape and the half-moon wood twin-fins, this fish was inspired by the legend himself, Bob Simmons. Upon first glance, it appears to be a single displacement hull. But a closer inspection will reveal the subtle single concave that starts at the 1/3 mark and continues off the tail but stays confined between the fins. The rail has a mellow integrated chine, which acts as a turning rail. These elements play together to create a fast and loose twinnie like no other. Bob would agree