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Thrust is provided by a Minn Kota Riptide series trolling motor rated for 50 lbs of thrust at 12 volts. Several Several smaller thrusters were tried before settling on this size. and did not provide sufficient thrust when towing a modem. Traditionally the thruster is mounted in the stern of the vehicle, but for several reasons we opted to mount the thruster near the bow of the vehicle and mount a skeg astern of it. The flat bottomed hull means that the kayak does not track straight on its own, so a rear mounted thruster would probably make the vehicle very difficult to control and drive in a straight line. The kayaks are also expected to station keep frequently and a bow mounted thruster should provide greater maneuverability and accuracy when doing so. Finally, a bow mounted thruster means the modem can be hung astern of the thruster and the vehicle driven forwards without risk of the propeller hitting the cable.