So I keep my raft in the village so I don't have to fly it back and forth every year. It's been at a friends house (warm) for the last 3 years but it's a pain and in the way at his place. I have cold, inside storage available. I was told to never store rafts where the temps drop below freezing as it's hard on the seams and glue but I really don't have much choice. How should I store it and what damge and timeline can I expect?