You'll have to check the archives. I believe geo888 at cs.com posted that the windload is less if the owl is facing true north on a 190 foot freestanding Rohn 25 tower. From: Jim Idelson <k1ir at designet.com> Date: Sun, 30 Jan 2005 21:49:25 -0500 How do you calculate the wind load of a plastic owl? Jim Idelson K1IR