I can tell you that as a trained spotter it also matters how often you clean the board. I believe it should be every 6 hours you clean it once but yeah clearing it before the sleet was a good idea. That should count yes.
My benchmark is 5 inches of snow. And then hopefully an inch of sleet on top of that to preserve our snow cover. I am hoping the incredible heavy rates slow down the sleet line.
the cool thing is 3 inches of sleet will last a really long time, I would argue it would last longer than 1 foot of snow. All that compact ice will not go away easily. Go big or go home right. If we are going to get sleet might as well get as much sleet as possible. Still would be cool.