V1 and V2 collided in the  airboat trail, located north  of the Drasdo Unit on the south end of Lake Hatchineha.  Neither V1 nor V2 observed one another prior to the collision.  V1's starboard bow struck V2's starboard stern.  V1 operator and occupants were not ejected and remained seated throughout the collision.  The operator and occupant of V2 were ejected from their vessel, with the operator being ejected into the water and the occupant into the bottom of the vessel.  No injuries reported.