There is a right way and a wrong way of tying a boat to pin. A lot of people get it wrong. What difference does it make? Well don’t you think it is better to tie a 10, 15, 20, ton boat to a 1 inch steel pin rather than the 6mm holding ring.
Why? Because the weld can, and does, break!
Use the ring only to pass the rope through so should the pin be pulled out it is still attached to the rope.