Got a solar cover and it does as advertised. I always use it bubbles down. Only issue im having is the top of it collects all kinds of dust/dirt and everytime i roll it up and put it back on it deposits the dirt. Im vacuuming sand daily because of it. We have an open yard, very sunny, sandy, dry and at times windy. Mowing lawn leaves the most debris on it. Wondering if id be better leaving cover off while mowing to allow the debris in all at one time?