Hardcorehunter
UL Shelter/Stove Geek
These look like a great idea. These add 15" to each step. Allows you to use fewer sticks to reach the same height. Weight reducing. The guy sells them on Archerytalk.
http://www.youtube.com/watch?v=eliTRbnleWk
http://www.youtube.com/watch?v=eliTRbnleWk