Innovation knows no bounds.

I think you've got a couple things going for you in this setup. One thing you didn't mention is the presentation itself. Instead of waggin' wildly from side to side, your hook is gonna lay back relatively stationary in a less chaotic attitude to find a solid purchase in the fish's jaw.

As you mentioned, isolating the hook from that rear anchor point definitely reduces the leverage the spoon can exert on the shank compared to the direct spoon-to-hook connection of a more std rigging.

But we should all realize that the leverage is NOT reduced to zero. Unlike the free-sliding jet diver example you cited, that spoon is still attached to the beadchain. And with only one anchor point for the spoon, it's still free to flap around pretty wildly as a fish shakes its head during the battle.

Have you ever considered attaching the beadchain to the butt of the spoon? Yes, I realize it would look really goofy. But consider this....

You still retain the isolation of the hook from the spoon, but now the spoon is anchored under tension at 2 points and less able to chaotically flap around during the fight.

Your thoughts?