I was good every winter, however three things conspired against me this year (all my fault). I had my cracked open window open a little too much. I have one of those add-on window vents to allow air in but keeps the rain out. But the trailer was tilted such that most of the roof water ran down that corner of the trailer. That was too much for it and the water spilled over into the trailer. Then I failed to check frequently inside the trailer, which I normally would but this year was busy and my key was always not on me. Also, I never went winter camping this year. So the leak went unchecked for a long time. Now I'm cleaning up the mess. Lesson learned.
PS: I also keep a 20 Watt pet heater in the trailer during the winter and I use those dehydration crystals. But the water input was just too much.
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