We towed a Vue to Alaska in 2008. I didn't put any kind of shield on it on the trip up. When we got to Fairbanks, the engine compartment and the cowling vents had a lot of small pieces of gravel in them. On the return trip, we had ordered a coastline and had it delivered to the shop in Fairbanks that was replacing our DP engine. We used it on the remainder of that trip and a couple of others and sold it with the car. It worked well, but any dirt between the cover and the car would scratch the paint. Kind of a tradeoff. This year, I am not planning to use anything on the replacement Vue. I bought it used, with a rebuilt (salvage) title solely to use as a toad. If it gets dinged up a little, I can always have it painted.