I just got a new 2003 330ci and I live in an area where there is a lot of stones, pebbles, and other debris on the roads. I've seen these "invisible" nose protection kits from various places. Has anybody had any experience with these? Do they work? Does it have a line across the hood where it comes to an end? Is it difficult to install? I guess this stuff is similar to the chipgaurd that some manufacturers put in the areas around rocker panels and quarter panels behind the rear tires to prevent chipping. It's made by 3M so it should be a good product.