How to line up the pieces at the coast near the shipwreck?

When you stand in front of the couch, the pieces will line up to make the path.

This is the correct position; however the starting-circle has a rectangular gap, and a large chunk of the path is missing...

Hint:

There is something orange and movable that can fill in the gap.

Solution:

Set the boat off on its own, then run back and wait for it to pass by.

Take a look at the other end of that piece of metal. It's not round, you can't end a puzzle there. But you CAN end the puzzle on the piece of metal a bit further over. You'll need something orange to bridge the gap.