I just got a solar cover, and I'm planning on keeping the pool covered when we aren't in it. During the week, that may mean a run of a few days without removing the cover. How should I add chemicals? Fold back some of the cover and add prediluted chemicals? I can't walk around the perimeter pouring in bleach, for example, and other than DE I believe adding things to the skimmer itself is discouraged - especially in the case of an acid!