It's not as obvious if your installer is good about cutting the film and not leaving useless trim behind. My installer uses sheets cut by computer and specially tailored for the hood/fenders. I wouldn't do half the hood...maybe the front 3rd is sufficient. Also it's not a question of if you'll get a chip...but when.
You know what's ironic? Clearbra is designed to be so optically clear because it has to be unnoticeable, but I see it as a mark of respect for the car by the owner, consequently one of the first things I look for IS an application of Clearbra - defeating the original intent of its transparency