Abstract: An apparatus for facilitation selective rotation of a sportboard binding relative to a sportboard interposed between the binding and the sportboard. An electro-magnetically actuated locking mechanism controls the rotation of a retaining ring assembly relative to a bottom capture plate and a top plate assembly. The bottom capture plate is attached to the sportboard. The retaining ring assembly is attached to the binding by teeth on an outer perimeter thereof. One or more pairs of diametrically opposed ferromagnetic inserts placed in the retaining ring assembly define specific angular positions at which the binding may be locked. An external power source (e.g., a battery) is connected to the electro-magnetically actuated locking mechanism via a switch adapted to be operated by a rider of the sportboard such that the rider can selectively control the locking and unlocking of the mechanism to allow rotation of the binding as desired.