How important are they? I've been running my bike around without the side covers on and it doesn't seem to overheat unless it's real hot out (95*+) and I get caught up in traffic. Once the temp goes up near the first hot mark by the red, it won't come back down once I get moving again. I don't remember this problem last year when I had them on. So I was just wondering if they help out quite a bit in cooling. It looks like they would "scoop" and trap the air pretty well, where without them I guess it could just flow around the radiator? Does this sound about right?