I spent most of yesterday afternoon and evening reading and re-reading this thread. I am hoping to use this on my taffeta hammock, but am experimenting on a spare Byer Traveler UL until I am satisfied with it.
For my spreader bar set-up, I started with a locked brummel loop in the center of a 36" piece of 7/64" Amsteel. Next I buried one side for about 3" and then put the bury cord through the sliding cord to lock it. The Amsteel continues for 9" until it reaches the spreader bar. At the bar, I drilled 2 holes rather than cutting a slot. I put the Amsteel through the holes, went another 5" and then made a fixed loop on each cord. The free cord was then buried the length of the spreader bar.
I chose the locked brummel loop in the center because I use Elephant Trunks and wanted a method to be able to continue using them. I will be testing these today and hopefully tonight. I would seriously appreciate any critiques from those that have already been playing with this option.