I have a customer who wants floating (unseen hardware) second surface acrylic signs and the only hardware I can think of is Z CLIPS or French Cleats. However, our standard "recipe" for second surface acrylic signs is we print the graphic on clear (reverse image), then apply opaque white vinyl on the back, then apply to acrylic. There's no way for us to apply the z clips safely without damaging the graphic. I really want to sell this job but can't think another way to have these floating. Any suggestions?