Has anyone replaced their safety lines with Dyneema? I'll need to do our old plastic coated stainless wire ones sometime and thought that dyneema could be a good way to go.

Can't have them for racing though.

I once interviewed a singlehanded skipper who fell off his mini and was dragged by his tether. The big problem was that he couldn't get back over the wire lifelines, so he was dragged for 10 minutes. We decided that if he'd had Dyneema lifelines, he could have cut them and just rolled back onto the boat. Then tied the lifelines back together again. As a singlehander I use Dyneema now, based on that conversation.
So when you think about how hard it is, even with a full crew, to get a person back on board, the ability to just use your knife to cut the Dyneema lifelines makes a lot of sense. Dyneema is cheap. Good crew less-so.

It's illegal to carry a knife on a sailboat, while you are sailing??? Huh???

Yes, it's better to not fall over at all, but he was up on the bow working on the sails, which required standing. On a Mini it doesn't take much to fall over.

Now that's an Aussi knife.

Better to make the boat user friendly . One shoe never fits every one

Thanks, what diameter did you use?

Not for racing... Even club racing?

From the YA Special Regs, which apply to racing in all categories:

An alternate is to lash the end of the stainless steel safety line with a dyneema loop.
Across the transom I have the stainless steel turnbuckles lashed to the pushpit with a dyneema loop so I can cut it.
I still use the turnbuckle to set the tension, the dyneema hasn't been undone aside from checking it.
Survived a Cat 2 audit, and the boat is rated to Cat 0, so I assume it's legal!