RedactedNarrative: Boat 1 and boat 2 were travelling down river.  Both boats approached a wake from a pontoon boat that was traveling up river.  Boat 1 slowed to negotiate the wake.  Boat 2 failed to look behind before making a hard turn to port to turn into the wake.  Boat 2 struck boat 1 with the bow on the starboard side at the operator's console.