They would either hit the bumps and stop/slow significantly, or push/launch me around, lol. Worse still, one ski slowing, and the other taking off, haha.
One other thing that can be an issue in these conditions is having the wrong / no wax. On hard snow bad wax will be slow but consistent however when you get that mix of old and new - soft and hard it will magnify the issue of skis that are short and narrow.