The Hobie pedal-power MirageDrive has always been a highly efficient kayak propulsion system, not just because it is actuated by the largest human muscle group (your legs) but also because it provides propulsion from the center line of the kayak, which completely eliminates the zig-zagging phenomenon which is an inherent problem faced by many paddle kayaks. The MirageDrive with Glide Technology incorporates roller bearings at key friction points to reduce resistance and enhance performance.