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One of the best ways to protect a dock, wall or keep a hole in the ice for a pump intake or a honey hole open for hunting is an Ice Eater. These inexpensive agitator bubblers involve placing a heavy-duty submersible motor that drives a rugged propeller in continuous duty to draw warm waters from the depths of the pond or lake towards the surface.
The warmer waters at the bottom of the pond or lake typically maintain a temperature of around 4 degrees Celsius and by bringing these waters rapidly to the surface in a directed thrusting stream they can keep large areas of open water even in the coldest of winter temperatures. The thrust of these deicers also assist with maintaining open waters and in total the diamter of the hole will be from 5' to 10' in diameter per foot of submergence of the Ice Eater depending on the horse power of the unit.