I work for a Marine Accessories Company and we are working a new LED navigation lights, but they do not exist yet. I have not found anyone that yet makes a masthead/anchor light that you describe with LED's. The festoon lamps are common for this type of light and you probably need to replace them until a better alternative is available. Some time next year they probably will be available, and even then it is hard to get the cheap boat manufacturers to pay the extra cost. Same goes for aftermarket stores- they only want what is cheap. Good Luck.