✋ Where should I look when I lob?

Players who are working to improve their game sometimes wonder: Where should I be looking when I throw a lob? Should I concentrate on the donnée, the spot where I want my boule to hit the ground? Or should my eyes follow the boule through its high trajectory in the air? Instructional books and videos say that your attention should be on the donnee. But if you watch Youtube videos of world-class lobbers, you can see that their eyes are following the boule through the air. Which is right? What should I be doing?