I'm assuming your Hood
already had a clear coat finish?
The bubbles could just be the result of heat...I've got a few little spots on my C/F Hood
directly over the engine. You'd have to sand down (areas of) or the entire clear coat and reapply if you wanted to do it over again. How bad does it look? If it looks that bad, I'd consider getting a different quality Hood
...the Clearcoat/UV protection on some leaves a lot to be desired.