Abstract: An auxiliary trim mechanism adapted to be disposed upon the transom of a boat for trimming an adjacent outboard motor. The mechanism comprises a rigid, flat base for attachment to the boat transom, a lever for actuating the mechanism, a foot for contacting and tilting the motor, and adjustable linkage dynamically linking the handle and the foot. The lever comprises an elongated handle adapted to be manipulated by a user for activating the mechanism, a switch manipulated ratchet for yieldably locking the mechanism in various deflected or undeflected positions and an extension deflected by the handle. The foot comprises an arm, a generally rectangular surface comprising a plurality of separate, spaced-apart, user selectable orifices and a pin adapted to be user-secured to one of the orifices for contacting and deflecting the motor.