loops and hooks are essential elements to connect others, they should be clear and smart. I learned a method for creating them from the wrapping technique used in fishing rods. Essentially, it involves wrapping small circles onto the fishing rod using 200D-500D metal threads in a round-by-round manner. At the same time, it involves hiding the start and final threads in a smart way either. Interesting.

The final step involves fully sealing them with epoxy resin. Then the structure will be stronger enough for supporting a sea fish. The other advantage is that epoxy resin could be heated by fire and melted in a clean way, which means they are replaceable. 

It is notable that epoxy resin is often considered a relatively environmentally friendly material, but it is not completely harmless or environmentally friendly.