I saw Chris Brown at the Puyallup snow show. He had Slydog Powderhounds on his sled with the OUTSIDE edge cut. He cuts from the ridge running the full length of the ski, about 1.5" in from the outside edge to just past the outside of the spindle. I put a pair on my Nytro and its amazing how well they work. WAY less steering effort, better flotation, etc. just all around better than stock. Makes the Nytro way easier to ride with a lot less effort.