Please advise on the suitability of this product for a 5' x 10' double-faced pole sign about 17' feet high at the top. My concern is whether high impact acrylic will offer enough protection against winds over the years and is non-yellowing. The product I'm using is called Tuff Glass. Any experience with this product? Can you glue strips of regular acrylic onto it to make a hanger bar? Or should they be riveted like you would do for a polycarbonate sheet?