I have been using the original 8 mm ropes for the main and jib and today i came accross this page, where they state, that for a 31 ft (as our current boat) a 10 and 12 mm recommended.
I had no issues with the 8 mm so far, but I am not racing, nor I take her out in rough weather.
what size ropes you use on your boat and did you have any issues with a different size before?
