I have them permanently mounted on the deck, but they are relatively thin and light (I think about 12 lbs for the 70 watt, mabye 3/16" thick? and quite stackable), walkable, and "semiflexible". You can't roll them, but they can be arced to fit the average deck. Some in the past have had some delam problems, I haven't yet (knock on wood) . There is once again a North American Distributor: Klacko Marine in Grimsby, Ontario. Doug is the guy, nice fellow, (905) 945-2579. www.sunware.de is the manufacturer.