Stone chips - Treatment or prevention

[Dave_au]

My black car is quickly becoming a nightmare with bonnet stonechips - especially on the leading edge. I know I can get the massive plastic bonnet protector that comes down over the nose of the bonnet, but I was wondering what experiences people have had with the touch-up pens (from the manufacturer or otherwise) and also if anyone here has or heard anything about the 3M protective bonnet tape that can professionally be fitted to the cars nose/bumper.

Thanks,
Dave