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If iI would suggest lash a tarp over them if it's an open trailer , do to our Road salt it will help protect your investments I went through that senario many years ago , tarps are pretty cheap, J-M .02
I tow my shanty with high quality Walmart boots fueled by jerky and gas station crackers and let idle on the ice with fireball. The load is a lot lighter cause I started using my much quieter auger which is also fueled by jerky and crackers. My v6 mini van has stow and go and fits the shanty perfectly inside (pull over shanty)