This is the first winter we own a pool. I think the cover is a tarp cover. When the snow melts, we had a lot of rainy days. The cover has lots of water and leaves. The cover was pulled down to the bottom of the pool. I am not sure whether there is a leak or tear in the cover. I pumped the water out a little bit (I was worried that the pump would pump out all water if there is a leak in the cover) and tried to pull the cover up. But I failed since it is too heavy with so much water. What should I do? Should I pump all water out on top of the cover? If the cover has a hole, will I pump all water out of the pool and cause damages to the pool? Thanks!!