GOING THROUGH A LOCK IS NOT A SIMPLE TASK WITH ONLY TWO PEOPLE ON BOARD AND A 50 FT. BOAT. SANDY WOULD GRAB A "BOLLARD" WITH A SINGLE LINE AMMIDSHIP AND WE WOULD HOPE WE HAD ENOUGH FENDERS OUT TO KEEP US OFF THE LOCK WALLS. THE FUN BEGINS WHEN THEY EITHER FLOOD OR DRAIN THE LOCK AND THE BOAT BEGINS TO MOVE AROUND. ANT BOATING FUN!