I need to get Coast Guard Documentation numbers on my boat ASAP. I've been having trouble finding any numbers that aren't vinyl that meet the Coast Guard's requirement for something that is basically indestructible. A guy at West Marine told me that most people are now using vinyl and covering the numbers with a clear epoxy so that anyone attempting to alter them would at least make a visible mess.Anyone have any suggestions here?Thanks for your help.Gary WyngardenS/V Wanderlust H37.5