I do not find your response amusing at all. Lots of products have multiple uses and Future is one of those. Besides decal preparation It can be used to create wet mud and water puddles in dios, tint lenses, secure pe parts. Transparency in clear parts can be improved by dipping them in it. These are just a few ideas but lots more out there.

By saying Future sags on the sides shows that you don't know how to properly apply the product. You are using too much, something that ANY paint or clear will do.