Seriously why do you never accept answers when they are given.
As said more often than not snow produces no roosters it has to be powdery, you just have to look at videos to see this. In rare cases snow actually gets thrown up like the linked video.
As can be seen and as already stated it disappears within seconds, 2 tanks in shot & first ones plume is already gone.
Taking into account the length of a game turn & size of a hex what makes you think it would leave a visible trail?
https://www.youtube.com/watch?v=7b2Rd4IE8Do
Turn the volume down but something a bit different.
https://www.youtube.com/watch?v=qAPbf6HRNSA