BO leafs- which boomerang?

I am running JohnJohn's 6" leafs, and if I go over any large objects, the shackle (stock) hits the back of the box. I have read that the best way to remedy this is with a boomerang shackle, but which one? theres about a billion, so I was curious which ones you guys were using? Thanks.....
josh

JKS makes a nice one.

JKS

Yeah use the JKS version. I do! Mark Hinkley designed and built them when he owned ORGS. He sold out everything to JKS a few months ago. Its a real well made product as are all the stuff JKS sells.