Abstract: A mounting arrangement for a boat's propulsion motor that permits steering of the boat by remote control. A preferred embodiment includes a bracket for attachment to a boat, and a steerable mounting plate to hold the motor. An orientation of the mounting plate is adjusted by an electric motor adapted to rotate a pinion gear for engagement with an arcuate rack gear. Desirably, a portable wireless control cooperates with a receiver including steering-control circuitry to effect operation of the steering motor. In one aspect of the invention, the receiver is structured for tool-free decoupling from the arrangement to provide theft security. It is also desirable to include a polarity-control circuit to resist damage to the steering-control circuitry by application of an electric power signal of improper polarity.