High Hover only works when the landing spot is only covered with a little snow/dust/whatever.
With the landings we usually do (burnt areas in the bush, desert landings...), there is no chance on "hover until itīs clear".....you would hover forever....
Not too much snow here, though.....but even when we did the same in snow, every landing is different.
Wet snow.....loose snow.....wet snow covered with a small layer of powder snow.....Fresh fallen powdered snow (up to 3 ft thick), covering (almost) "solid" ice.......not a good idea to do a running landing on that stuff...
What i am trying to say here:
White/Brown/Green-out landings require experience-the kind of experience that you can only get when you keep on doing these kind of landings for several hundred or thousand reps..
Itīs nothing that you can train in a 5-hour-course.....and itīs a skill that you loose when you are not using it frequently...