I would say you are not spraying it on thick enough if you are having trouble removing it. I have plasti dipped the chrome on my Valiant and I can peel it off whenever I like and it is not actually that hard, it comes off in one piece. It is a bit harder in the thin places, but you can just rub that and it comes off.
You should try this stuff, I thought it would be a waste of time and just a joke, but it has it's uses and is actually surprisingly good as well. You can patch it up simply by spraying over it again and it finds the level and you would never tell. It also protects the paint etc from damage. Then the bit about masking is a waste of time, I didn't mask a thing and simply rubbed it off when finished. It you spray your wheels, you just peel it off the tyre once finished.
Try it, you will be very surprised...