Hint 1: the first shot went over the sand trap in the middle of the grid.
Hint 2: the starred clues give a hint to the meta answer.
Hint 3: the place where the ball started forms part of one of the starred clues.
Hint 4: it also…
Since this is a bit complicated, here are some optional hints:
Hint 1: none of the thematic across clues mentioned above have cross-references.
Hint 2: however, some of them are cross-referenced by other clues.
Hint 3: you’ve probably already seen…