I've been seeing quite a few folks with hood/roof mount rod racks. They sure seem convenient, but how safe are the rods from getting damaged? While in Montana last week, we drove through a few short sections of roads that had been freshly chipped and lots of projectiles were flying about as traffic past. I saw one car go by with about 6 rods angled from hood to roof...I was cringing thinking about what a misplaced pebble traveling 50+ mph might do . For those that own/use them, any issues... other than cleaning off bug debris?