Use the trailer box or similar to hoist the boat to the garage ceiling in the winter. If you have to store outside, here is one solution for the colder climes. If you leave a bit of slack you can then slide some poly around the boat and tape it up. Leave the poly open at the bottom to ensure no snow or ice gets trapped on the boat. The boat is strongest when on its side so no worries about distortion.
Final touch is a bit of foam on the supports.
And there it stays from the end of October to April.