I've suggested before, but why not use Mick Reeves' clevises in conjunction with his 2mm turnbuckles? Take the RH tread eye out of the turnbuckle and replace it with a threaded MR clevis on a short length of 2mm bolt, (with its head cut off). The clevis pin is threaded all the way through, so you unscrew it halfway, (or a little more), and the fitting is free of the rigging. The opposite end is the usual swaged loop. The resulting fitting is pretty small and unobtrusive.