Hello. Is the pump to get rain water off the top of the automatic pool cover supposed to get most of the water off with the pool cover closed? It's like ours isn't heavy enough to make the water slant towards where the pump is and there are huge puddles all over the cover that the pump can't get. The only way to get the majority of the water off is by opening the cover most of the way which pushes all the rain water into a smaller spot which makes the rain water deeper. I have 2 small children and don't like to leave the pool uncovered like that. Any thoughts?