Be aware of the possible foibles of D12, I had a mast down last night due to a side stay splice coming loose, no real damage apart from my pride <img src="http://www.catsailor.com/forums/images/graemlins/blush.gif" alt="" />. I would recommend that you definately go though itself 3 times on all lightly loaded ropes and leave one strand visible outside of the core as a telltail. Some 49er sailors say thay have even put a stitch through the tail to prevent this light load creep. Still haven't had a stay fail yet through breakage just the splices creeping though on the lightly loaded stays.