Cautionary tale about using alternate types of pins in rigging: A MacGregor X recently showed up at my marina on the California Delta. My slip neighbor walked past it one morning, and noticed that the forestay had become detached from the bowplate... The only thing holding the forestay/roller furler in place (and hence, keeping the mast from falling, timber, like a big aluminum tree) was the roller furler cord running from the drum on the bottom of the forestay through a fairlead and then back to a cam cleat in the cockpit. Where it became taut against the fairlead, which was giving it tension to continue to hold up the mast, you could already see some chafing in the roller furler line.
After examining, we saw that the forestay was held on by a pin with a wire bale over it -- it looked like the pin and bale that holds my wheel on my trailer's jack at the tongue.
Here's a pic:
http://www.etrailer.com/Accessories-and ... QgodVWOUTw
Anyway, during the night, which had been windy, the sock cover on the furler had wiggled the forestay enough that the pin worked its way free from the bale holidng it on. My neighbor and I re-attached the forestay, and used some parachute cord to make sure the bale would not clear the pin again. I haven't seen the owner at the marina to let him know yet, though.
It would be really unhappy to come to your boat and find it demasted due to a pin unseating itself.
I think straight pins with ring dings are better, even though removing the rings can be tedious. Simple, cheap, effective.
Cheers, Joe