I had the occassion to try out some of the good advice from this HOW Forum on removing painted lettering from my(new) boat. I will share with you my experience and observations. EZ-Off oven cleaner works great! I tried it on two different days and it works just OK when the weather is in the 50's and much better in the 70's. It took two-three applications of the oven cleaner with scrubbing with a Scotchbrite pad to get 99% of the paint off. There were a few thick paint spots that had to be lightly scraped. I only had the yellow staining of the fiberglass when I used the oven cleaner in direct sunlight. The yellow staining was easily removed with a light application of the mildly abrasive SoftScrub(with bleach) cleaner.