You'll probably find that there's not many vinyls out there that won't bubble on the tank, it's that it expands at a different rate to the vinyl and is gasing constantly.
With my printer at work which is running solvent inks we need to let our prints gas before clearing otherwise it will cause bubbles between the vinyl and the laminate. The holes will allow the gases to escaped quicker yes but will still bubble slightly, you can get a 1/4 inch hole punch and maybe press some holes into it, that might work.
Bike looks awesome to mate, you done an awesome job, I'm sorry to hear about what's happened.
You should at least go get it dirty once before you let it go wink wink.
Sent from my iPhone using Tapatalk 2