Sledding wouldn't end well because you can't really control a sled in the same way you can control skis (things like slowing, stopping, turning...), and it's a very long way down. If you were to hike up you'd carry an ice axe with you, which would help you stop in case you started slipping down. One common way of descending peaks like this is called glissading—which is just a technical term for sliding down on your butt and using your ice axe to control speed.