Saw this one last night at work. . I just happened to walk by and it was preety sweet looking. . basicaly the guy velcro'd his rdd to his dash at its highest point in the middle. Than took a hat, with no metal on it of course - and just threw it over top of it. The only way I could tell that it was there was because he had the face of his detector slightly popping out where the back of the hat is.
I thought it was preety clever, just throwing it out there for those who still haven't found the best way to hide it.