How do I win the contest?

Hint 1 of 13:

You should watch the contest once to see who will dive.

Hint 2 of 13:

Vince is the best diver in the Pharts.

Hint 3 of 13:

But he also needs a little motivation to get off the diving board.

Hint 4 of 13:

No one can give him the push he needs, but some *thing* can.

Hint 5 of 13:

Something that can reach the top of that very tall diving board.

Hint 6 of 13:

Maybe something that can fly?

Hint 7 of 13:

Have you seen anything relating to birds lately?

Hint 8 of 13:

There are several roc-related items around Naughtytail.

Hint 9 of 13:

You will need the roc feather and the roc call.