If you want a more temporary (6 months) type of film, try this stuff. http://www.strippablecoating.com/pro...hield_5720.asp
This is what I use behind my rear tires at the track to make rubber removal easier. It works great and is only $25 for a gallon. Just don't apply it when it's only 30* outside or it won't dry, and will stay white. (MY car at MIR)