I remember that in the 80s a pneumatic de-icing system was successfully tested on a Dutch trawler. On the front of the superstructure pneumatic boots were installed. Depending on the circumstances the timing of the inflation/deflation cycle could be adjusted, the shortest period was 30 seconde.
A disadvantage is that pneumatic systems are expensive, heavy, complex, and easily damaged and probably due to that it never really caught on. Every penny counts you know…
An overview of the several de-icing techniques and their capabilities.
There is an old thread on gCaptain on the subject of de-icing.
A bit drastic to use a mortar for de-icing but it seems to work…