I live in NH and have a vinyl pool with one of those green spring covers. Its been very snow and rainy lately and the pool is about to overflow. I did drain it about 5 inches before closing but took a look today and its high again. I see some ice on the cover and some sitting water. Can i use one of those submersable pumps on top the cover to drain water? I read somewhere that lowering ice can rip a liner but this water i think is on top the ice so i think it is save but I wanted to ask.