RedactedNarrative: V1 was pulling a tube "Molecule" with 3 individuals on it, straddling the balls and facing out toward the water. 1 passenger claims they were turning a corner & all 3 slid off the tube & the victim hit something which sliced her leg.  Victim claims they were going over a wave & she was dangling her right leg when it hit something underwater which  sliced her leg.  All 3 were wearing life jackets & had been drinking alcohol.  The Investigating Officer stated the leg was sliced deep to the bone.