if I keep them on my pack and expect to use them in a glacier emergency (while lying down, etc) I clip webbing to them and clip the webbing to a pack strap by my shoulder so I have a reference point to grab and pull on (like a ripcord) to get a picket in quick (rather than flailing with an arm trying to grab the top of a picket, which is not hard, but when you might be freaked out a bit could be difficult).