I can't get the halyard.

Hint 1 of 17:

You need something long to reach it.

Hint 2 of 17:

Nothing is long enough by itself.

Hint 3 of 17:

Why don't you try putting things together.

Hint 4 of 17:

The oar is the longest.

Hint 5 of 17:

You need something else to attach to it.