Sorry, should have read my post before posting......
I know that we are not talking running landing here, but still my comments are valid for me. A direct (zero-zero) landing leaves very little margin for error or unforseen snow or surface conditions, and even less so with heavy hcp's. I feel a high hover (if you have the power) is safer in the long run, and all conditions. Provided you have the references for it.
This is my experience, and I only post it as an opinion.
I would be intresting to hear the opinion of other pilots operating in 3-4 feet of snow or more.
CB