The boom outline and width at the tail (rear) are crucial for the rig to deliver a perfect mix of balance of power and control. The outline of our 140 and 160 booms, are designed specifically for 'bump n'jump' performance, where you need to be closer to the rig for maximum control. Our largest 180 boom, features a wider outline so as to gain momentum from the rig early and in order to attain maximum speeds. Generally, a wider boom tail-end, generates added power while a narrower tail-end piece, more control. This position will vary according to wind strength and each windsurfing discipline which in turn requires each boom size and geometry to be developed specifically.