RedactedNarrative: On 06/16/2018 at approximately 12;30pm, watercraft operator reported the following at the Wolf Creek State Park Ramp;
  
  Operator stated he was northbound on Lake Shelbyville operating his 2008 Ranger Bassboat (IL 7090KT). Passenger was seated to his left.  Operator reported they were approaching the Sand Creek Cove at Point 3 with the intent to turn eastward into the cove to fish.  Operator reported he was traveling 40-50mph when he hit the wake of another, unknown vessel at the mouth of the cove.  Operator said at impact, the outboard motor started "flopping" up and down at which time he slowed and stopped.  He then observed the transom was broken near the motor attachment point.  
  
  Operator then used the trolling motor to navigate to the Wolf Creek State Park ramp were he was able to remove the watercraft.  The boat had taken on water, but did not sink.  Inspection revealed the fiberglass was cracked vertically to the right of the motor and the transom was separating from the hull of the boat.
  
  Operator and passenger were fishing in a tournament originating from Eagle Creek State Park.