I am going to have to file this one away in my brain. Tippet rings are good, but you still have to cut off, and I haven't seen any really good safty-pin type latches that are light enough for fly fishing.

I'm curious on how the process of changing the fly goes. It looks as troublesome as re-tying. Are you using this for floating flies?

I'm wondering if you've tried tying your flys with a pre-attached loop (recommended by Charlie Meck) so you can do loop to loop connections to swap out flies?