this unit allows you to have the mount forward for deep powder and less weight on the ski like on the first generation of hawks. with it slid back it is close to the trail adapter made in 06 to make trail riding better. It does work well as I have been using one. We have been using both of the products that scott has come up with and are worth the money.
For that matter I have 2 used ski setbacks for sale 225.00 each.