Why is the tack pin so insecure?

[RubberDuck]

I just noticed that my Sun Cat's sail throat is attached to the gaff with a pin. See the attached pictures. I think it's called a tack pin, and it's probably this one: https://dwyermast.com/tack-pin-small/. It caught my attention because the sail corner was almost detached from it. Looking at it closer, I don't understand how this is even remotely a good idea to use a pin that can rotate and pull out by itself. How do I make this more secure? Replacing the small pin that prevents the tack pin from pulling out with a cotter pin seems like a bad idea as the cotter pin might rip the sail.

[bruce]

Yeah, not the most secure fitting, but it can be moused with monel wire as you would other critical fittings. They're useful for situations where the sail is removed frequently. I doubt that's the case for any Sun Cat.

You could also replace the roll pin with a ring ding, as Dwyer used on the gooseneck swivel also seen in your photos. That would reduce any concern you have that the sail could catch on it.

[RubberDuck]

You could also replace the roll pin with a ring ding, as Dwyer used on the gooseneck swivel also seen in your photos. That would reduce any concern you have that the sail could catch on it.

That is a great suggestion, thanks! For anyone else looking at this, these rings are also known as cotter rings.

[Niantic Mike]

I'm using a 1/4" stainless steel bolt