Method
1) Select a coconut shell, Then cut them in half to equalize.
2) Use sandpaper to smooth the surface shell.
3) Drill a hole in the middle of a coconut shell.
4) To inject spray, and sun to dry.
5) Insert the rope into the hose.
6) Bring a rope tieb to a coconut shell on both sides.
7) Test the strength of coconut.