We bought a 2020 North Trail 24BHS, and we love it! I just finished winterizing it for the first time, and I used pressure to blow it out, and pumped in antifreeze till everything ran "pink" (hot and cold). I'm very confident with what I have done so far. But I cannot find any reference about whether the low point drains should be left open or closed during winter storage. A friend of mine has an Airstream that he winterizes himself, and he says he leaves the low point drains open. My inclination would be to close them before storage. Any advice would be appreciated!!!