Z5 Trailering Straps/Pictures

I have an '08 Z5 top on my Supra, I was sent a "trailering package" from Z5 that attaches to the front of the rack which is used when you are trailering the top on the freeway. It came with no directions, and I cant figure out how to attach it to the front of the rack. Does anyone have any pictures of how they attached this to there rack? Possibly the '09 and later models have it already installed?

Thanks for any information...