Re: "what Jeremy is describing is called Abalakov anchor." A more descriptive name is "V-thread." I'm no expert, but I don't think the Original Poster has been given a clear picture of this technique. You don't have to buy a bunch of ice screws, just one. You use it to drill an angled hole into the ice. Then you unscrew it, and and use the ice screw to drill another angled hole, and try to hit the first hole. If successful, you have a 2-part hole, one part goes down, the other part goes up and out of the ice. You then thread something, a cord or piece of webbing, through it, and tie a knot. You now have a loop that goes down into the ice, with part of it showing above the ice. You can tie your tent's guylines to that.
I do wonder if glare river ice is soft enough to do this technique with an ice screw.