How can you make a rectangle into a square? (Confused.) And yes, I can always buy a different pad.
So far, the Ricesac (smaller Icesac) sounds like a good idea, or a Valdez modified to add the Chernobyl goodies (ice tubes, crampon patch). I think I can live with 40 to 45 liters and if I get 50-52 I know I'll fill them...
drC