The Twin is a little bit more of a retro style outline with a flatter rocker. The bottom rocker is a flat to double with a slight V off the tail giving it a lively feeling through turns. It really holds a line and trims more like a retro fish. It carries thickness from nose to tail which works great for small waves and continues to give it that retro style ride. 
 
 Very fun to ride with the perfect combination of retro style outline, foil, and bottom with added modern performance.