It did ok at 35-37 degrees for 4 hours the last time out, I read the specs but was concerned about plastic components. I find very difficult to quit for the year. I have had a great year using the nox and the deus. Thanks to all.
Don't try it in water lower than 32F, gets a lot harder to swing. Seriously, the operating temp range of the Equinox from the manual states: -10°C to +50°C (+14°F to +122°F) - It don't care what is surrounding it (air, water, or ice) just keep it in that range and it should run fine.