well you can buy the clear plastic masks that are more permanent.... and you cant really see it on the car if you do a good job.. but i dunno how it would look on a car that already has rock chips etc....?
Samson,
It really depends on the amount of chips and color of the car. If you have a few and it is not white or silver then you woudl be okay to cover it with a clear bra.
I have seen a lot of them with a bra after a chips and it looks good. Of course if you are right up on it you can see the chip. Most of the time the product is like shirt and will shrink into the hole to hide it.
If you are gonna buy one, get it from here
www.rockblocker.com. There are not better prices around to my knowledge.