We recently had the same issues on our 40' Alfa 5er. And we too thought we would tackle the job of removing the decals. We did it, but its something we will never do again. We used a heat gun to soften the decals, then removed them with plastic razor blades. Found those at the local auto parts store and they fit a standard razor blade holder. After that, we had to get all the left over residue from the adhesive. Tried numerous things, but the best we found was called Rapid Remover I found on Amazon. It worked wonders. Just spray it on, let it sit 60 seconds, and wipe off the melted glue. Didnt harm the fiberglass or paint or gelcoat, or whatever it is they put on the thing. It took a few weekends, but we conquered the thing.