RedactedNarrative: According to V1 operator and occupant, as well as below witnesses, V1 was traveling on the east side and northbound in Big Sarasota Pass.  While traveling as such, and due to V1 being operated too close to the docks along Siesta Key, V1 quickly attempted to avoid striking the dock belonging to the homeowner.  Heavy vessel traffic and tidal current also played a factor in this incident.  V1, unable to safely avoid a collision, initially struck the piling of the dock, ejecting the occupant.  Immediately afterwards, V1 then struck the aluminum dock itself, causing damage to the dock, attached guidepost and V1.