to motor m and the other to transom 18 preferably plate 106 is attached to motor m and receptacle 110 is attached to transom 18 similarly preferred is that receptacle 110 include rails into which edges of plate 106 are fitted and a terminal stop or other feature designed to prevent further downward movement of plate 106 when the plate 106 is appropriately positioned within receptacle 110 assembly 102 may also include if desired an indicator informing audibly visibly or otherwise a user that plate 106 is correctly and completely inserted into receptacle 110 when assembly 102 is in use motor m is mounted to transom 18 by sliding plate 106 downward into receptacle 110 although gravitational forces assist in maintaining plate 106 within receptacle 110 a suitable clamping or latching mechanism may be used as well to secure the position of motor m hence to remove motor m one need merely disengage the clamping or latching mechanism and lift plate 106 from receptacle 110 providing a quick release of motor m without need for fasteners e g bolts screws etc to connect the motor to transom 18 shown respectively in fig8 9 are alternative mechanisms 300 a and 300 b for use in receiving accessories via quick release fasteners or otherwise such mechanisms 300 a and 300 b are particularly useful when vertically extending openings 304 exist in deck 22 openings 304 may be formed generally as depicted.