an opening formed within the shock mount 20 a shackle 28 or other similar structural member such as an open link d ring or the like will be well suited for engagement at one end with the shock mount 20 and at its opposite end to the body member 12 an example of this arrangement is depicted in fig4 wherein the pin of the shackle 28 is disposed through the shackle and is threadably secured thereto to prevent the unintentional release of the shackle 28 from the frog in another embodiment the first attachment member could be shaped to have a nut 30 or other similar hollow threaded structure that may be threadably joined with a bolt 22 that extends outwardly from the spring wing rail 18 such as that depicted in fig5 and 6 in another embodiment the first attachment member may be provided in the form of a hook 32 or other similar angular structure the hook 32 is well suited for engagement within an aperture in a shock mount 20 or engagement around at least a portion of a structural feature of the spring wing rail 18 it will be important that the second attachment member be shaped to releasably engage an anchoring member that is secured in a fixed position spaced apart from the spring wing rail 18 one example of such an anchoring member is the shock.