Sorry about that remark Oily, but the ex father in law had a cowboy put a 80cm dish up high on the middle of a gable end. He lived in Torquay, Devon half way up a hill. During on of their gales in the 90's lost over 9 rows of bricks. The more rows of bricks above the brackets the stronger the anchor. Hope that you do not have a problem. Not much worth looking at past 45* west anyhow.