No, not really. I had it full of skis and random crap and the struts could lift it with my help. I was scared of a wind gust closing it on me when I had it loaded up though! Didn't take much to pull it down. I may experiment with stronger struts but, I don't usually have the Thule box besides winter camping. But honestly with the storage increase I might run one more full time.When you pop the top does everything in the Thule Box go flying forward?