I?ve used my Garmin 100 with good results. This handheld I was refering to just shows the depth (and fish - but with a symbol it isn?t worth much anyway). My Garmin showed the icethickness too on the display, shooting through 60 cm of ice without any problem as long as the surface of the ice was smooth. I used to have it transportable, but I have bought a bigger boat and it is permanently aboard. This is how I used the Garmin before.
And the image produced looked like this.
Note that the first sequence shows the transducer ON the ice, then I moved it to the hole just to show the difference (described at my homepage).
The handheld should be easier to use when icefishing. Is it reliable, does it shoot through the ice well. If not, is there any tricks for it etc etc...