Technical fact - It was pointed out to me by a chemical engineer that an epoxy boat might not fair well in the cooler temperartures of the Arctic. I checked with the chemists at SystemThree Epoxy. Silvertip maintains its strength to -50 F with a safe working temperature of -30 F. It becomes brittle beyond -50 but only while the temperature is that cold. My plan for Arctic exploration in my Tiki does not call for use during the winter months.