Shooting through the ice will not damage the transducer so go ahead and try it a few times. Just wet the ice and try a reading, if you cant find bottom, squirt more water and try again. If that doesnt work make sure you change the depth setting on the unit to make sure the unit will be able to capture the depth.

Will a fish finder work through ice?

Yes – a fish finder can be used to shoot sonar directly through ice to locate fish in the water. You just have to make sure that the ice is clear and has a smooth surface, and that there is no air between the transducer and the ice.

Will a boat transducer work for ice fishing?

A special transducer is not necessary. Assuming you can safely remove your boat's transducer and wiring without damage, it should work fine for ice fishing. Keep in mind that the function of a transducer depends on being level to the surface of the water.