I have one on my Adv Sports, and also had them on my last two bikes. These are great when touring in hot weather as you get airflow underneath you, they also serve to keep you away from a wet seat if it's been raining.
Yours is it sitting well away from the seat in the middle though. Mine doesn't fit like that, it is in contact with the seat. You need to cinch it in across the centre section, maybe use cable ties if necessary. If it helps I can get a photo of mine from underneath.