Archery
The bow and arrow just wasn't his weapon. (Percy)
Percy picked up the bow from where it lay on the ground. He looked longingly at the canoe lake, where the Demeter and Hermes cabins were having a race. Then he turned to the long row of targets in front of him.
Chiron stood to a side, waiting impatiently.
"Come on, Percy. Try again."
Why, oh, why did they have to put him through this torture? They already knew that the bow and arrow just was not his weapon.
Sighing, he took aim at the target and let the arrow loose. He heard a dull thunk! For a moment, he didn't breathe. Did he actually, for once, hit the target?
The scream that came from the woods on the other side of the archery range proved that thought wrong.
"Percy Jackson!" a girl's voice called.
They already knew it was him. Well, of course they did. Even the Aphrodite girls could shoot better, though they spent minimal time at training.
Percy dropped his bow and followed Chiron into the woods. He could hear voices saying his name quite angrily.
He sighed again. Who had he shot this time?