Jigging – clean it out to avoid line-catching
Tip ups – build a wall for a wind shield, plus you can hide your flag behind it identify whether your flag is up out of the corner of your eye.
I never thought about it causing a hazard. I don’t snowmobile, but if people think it is creating a hazard I would do my best to flatten them. (I don’t hide the tip ups in crowded areas where someone might run one over though).