Who else should surf for the Pharts?

Hint 1 of 7:

When all else fails, Ernie usually has to help.

Hint 2 of 7:

So he will need to learn how to surf.

Hint 3 of 7:

A long stay underwater might help you learn.

Hint 4 of 7:

Have you been underwater (near the lighthouse)?
See the question in the "Other Puzzles" section for more information.

Hint 5 of 7:

You should find an item that will help you a great deal.

Hint 6 of 7:

If nothing else, it will keep you from drowning.