RedactedNarrative: Law enforcement responded to the area of Big Foot Beach in Lake Geneva reference a boat that was sinking.  They observed a boat approximately 100’ from shore sinking with nobody on board.  The vessel Owner indicated while his boat was anchored it started sinking at which time he got off of the boat.  The Owner advised that no one was injured during this incident.  An 8x8 access panel underneath the swim platform had not been installed.