I have an 11x8m west facing, clay soil, very overlooked garden. I really want to create some privacy around some of the fence lines. I've already got a couple of trees growing and a solid roof gazebo/pergola in one corner. I was thinking of a inner willow fedge, ideally done in a way it can screen to about 2m in the summer. I'm aware their high maintanence, but does anyone have any advice/experience/tips?