I have a refuge that I used last year. I tied to the middle of a 12" stick and put the stick down a hole and under the ice. Other end I tied off to the anchor points on the refuge. Never needed more than two "anchors", both into the wind. At the end of the day i could reach down the hole, twist the stick and pull the anchor back up the hole. if anything happened where I couldn't retrieve my "anchor" I could just cut the rope and I was out a stick, nothing more.