RedactedNarrative: V1 was recreationally cruising as part of a guided jet ski tour of Estero Bay that had 6 PWC's traveling in a single line formation.  The lead PWC  was being operated by the employee of the rental company and V1 was positioned as the last vessel in the group.  V1 veered starboard and impacted a fixed channel marker.  The impact ejected the operator and occupant of V1.  The collission resulted in no injuries and significant fiberglass damage to V1.