Hi Timbo,

I didn't calc the weight benefit. In theory dyneema is 7 times lighter than wire. However I don't believe that such a small improvment will improve the performance of the boat. I gave a guestimate about the drag some postings before, it is neglectable as well.
The main benefit of dyneema is cost. I would pay nearly 50%-75% more for wire including swaging and a plastic cover to protect the sail.

After another day with light wind (in the morning) and strong wind (in the afternoon). I think I will invest in wire. In light winds, it was fine. For strong winds and waves it is not stiff enough in my opinion.

Waynemarlow,

Agreed that the leeward sidestay will be slack. But the leeward forstay (if you have one) should not.

Cheers,

Klaus