I've been riding the Tomo vector quad, 5'10" X 19 1/2" X 2 1/2" and thin foiled rails. I reckon the volume is around 29 Liters. My much loved 6'0" Spitfire has almost 6 more liters. I agree with Chris the Tomos are wicked fast and you have a lot of control of maneuvers. I'm looking forward to the five fin option. The quads on my board are hatchet type glass-ons designed by Tomo. They are tiny 4" height single foil front, 3 3/4" double foil back and for a guy my size 6' 5" tall, 200 lbs they go insane. Does anyone know where we can purchase similar type fins compatible for FCS and Futures?