In Neckdweller's quote from the marina's Facebook page, they cite the desire to protect their docks from damage in the spring ice-out. Perhaps they need to have it pointed out to them that running their circulators a lot more than just enough to keep the ice off the docks does not add further protection. Once the ice sheet melts at the shorelines and is free to move with the wind, no circulator action is going to protect the docks from the ice sheet. Melting by circulator is far slower than an ice sheet even just creeping inward. They need to experiment with circulator technique. I've thought that much of the time ice is better addressed with more short intervals rather than with fewer longer running intervals. The marina's circulator program may simply have ON intervals that are too long.
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