Hi Ken, I use 2 T&S screens for the same stock. One regular and one filtered to show only trades of 400 and over. In fast moving stocks I find it helps me keep track of the momentum of blocks around breakouts. I just need to be able to see it from the corner of my eye to judge the velocity and weight of trading. If i have been looking at/trading another stock and after notice this stock is making a move, it's also good for rewinding back fast to look at the block trading at previous support/resistance without trailing though millions of 100 block sizes to see them. Mike