squid line??
I use Slammer Tip-Ups which sit on top of the ice and are used in conjunction with a spinning rod and reel. Braided or fused lines will get fused to the ice where as monofilaments (or copolymers, fluorocarbons, and other "slick" lines) will wick water and can be pulled through the ice if your hole skims over.
I agree with farmboy also. I use Fireline for certain applications when river and Big Lake fishing and it will cut your fingers but good.