RedactedNarrative: OPERATOR WAS TRYING TO RIDE V1 ONTO THE JET DOCK AT THE RENTAL FACILITY. OPERATOR BECAME AFRAID SHE WAS GOING TO MAKE CONTACT WITH A STATIONARY UNMANNED PWC (V2) ALSO ON THE JET DOCK SO SHE STUCK OUT HER LEFT HAND TO TRY AND AVOID CONTACT WITH V2.  THE PORT SIDE OF V1 AND THE STARBOARD SIDE OF V2 SMASHED THE OPERATOR'S LEFT HAND RESULTING IN A SEVERE LACERATION TO HER THUMB THAT REQUIRED 9 STITCHES.