Double-ended shrouds with Dux?

[Bott]

keel stepped. there is about 20" of swift in the ~35' after shrouds... most all of the aft-staying for the mast is in the running back and peak halyard.

[Brion Toss]

Hi Eric,
Shroud pairs are indeed an elegant way of handling lowers, but they are trustworthy only if they can pass a worst-case-scenario test: the seizing must hold even if one of the legs is broken or loosened, so that all of the load comes on the seizing. And it will do so only if the seizing is made exquisitely correctly, and doing that is even harder than splicing correctly. So unless you work up that skill, I'm with Brian in recommending separate lowers. And on separate tangs.
With Dynex it turns out that it is not even possible to seize, no matter how exquisitely; we recently destruction-tested several samples, and the stuff just crawls through the seizing, at very low loads. We were able to use a multiple Brummel successfully, but at least as tested we were only in the 60-65% strength range. Therefore when we rig a Ranger 33 in the near future we will up the size of the lowers to compensate, and you could do the same.
So, a shroud pair in wire, if you contribute the skill. Otherwise splice and install a second tang. Or a Brummel in Dynex, and thus a shroud pair there.
In gasshu,
Brion Toss