we have used a product by neschen called easy dot. works really well, easy to move, no bubbles. durable.
http://www.neschenbrands.com/websites/sealbrands/neschen.nsf/htmlalias/easydot
Just call my rep to have a sample. Seems to be a good product.
After several test runs, We do have the final version of GlassADhere (with micro-suction technology) perfected and in stock. Just e-mail me walterjr@glassadhere.com for a sample. www.glassadhere.com Our national, regional and local dealers (Photo Tex dealers) are stocking or will be stocking the material. Its does come in optical clear and white opaque. Also look for NEW window media to come out in 2015. Happy New Year to everyone.