Good post by Ike on deadmen anchors. His photo shows it perfectly, but he wasn't explicit:
You need to tie it in a way that you can untie your guy line and pull it out without removing the stick. That stick may not come out till spring. His setup keeps the knot above the snow, and once untied will leave only a unknotted line to pull out.
I get a little anal about the end of my nylon line and cords, but I try hard to have a slight taper, not a bulge at the heat-sealed end. So it doesn't snag in a case like this and so it is easier to push through a shoelace hole, etc. So I do a lot of cuts at one time, set up a candle or propane torch, put on an old pair of leather gloves and make nice ends on all my lengths of cordage.