A Rutschblock test is a great way to sample the stability of a larger section of the snowpack and see how it responds to the weight of a rider. Make sure the back of your block is cut cleanly without disturbing the center with the G3 Rutschblock Cord. Cleaner and lower profile than the traditional cord with knots tied in it, the G3 Rutschblock Cord consists of coated stainless steel cable wrapped intermittently with swage springs that do a superior job of cutting through tough layers.