North Kiteboarding Foil Edition Sonar AF! Start building your modular quiver here. The new refined aluminium mast profile section delivers an optimal balance between light weight and exceptional strength, so you can kite, wing, surf and tow foil with confidence, making use of the fully interchangeable Sonar Foil System to extend your playtime on the water. Engineered to last, with exceptional strength to weight ratio, and our unique GeoLock system for a clean, direct feel with minimum resistance on the water. The AF85 mast increases overall ride performance in choppy conditions. The AF72 mast is ideal for shallower waters, and prone surf foiling. Now with A700 Fuselage for added stability, and new S270 Carbon Stabilizer for performance and efficiency.