For those of you not following the New product for Figure 9 users we've had some interesting discussion on finding new lightweight adjustment systems for suspension.
While looking around for something that fits that description, I found a product called Tylaska spool shackle
It's basically a way to do a larks head with the rope end. The summary said the 'oring' wasn't necessary and I'd bet having the end tied into a loop isn't either.
Here's the directions.
For 1/8" rope it only weighs 2.8g with a 2000 lb breaking strength.
The main problem is the price.....