okay, thank you for the explaination. I didn't know you how much variability you could have with the top layer. Now that you mention it, I do recall Wimby 2001. They changed the grass from a mix with rye to 100% rye to make it last longer and leave the grass firmer. We saw a few more rallys than usual that year, but it was a decision make very public by Wimby officials to encourage longer points and give the spectators a better show.