Ok, ive got an 84 bass tracker 3 with some letters that are older than dirt. Ive scoured the net and these forums with no luck. Ive tried the methods suggested to no avail. Ive tried a heatgun and a plastic scraper. No effect. Tried goo gone, rubbing alcohol, paint thinner, paint stripper, gasoline, and brake parts cleaner. None of it worked. The paint stripper melted the letter parts but the formally white backgrounds are unaffected. A metal razor blade has a hard time scratching them without biting into the aluminum underneath. Im at my wits end here. Someone please give me a magic bullet here. Ive considered a stronger acid but dont think it would be good for the hull.