I am looking for advice on how to remove water from behind my liner. I overfilled pool and some water has gotten behind the liner. To maKe matters worse this winter we had record weather and the snOw melt left more water behind the liner. I now have a LOT of wrinkles and some very soft spongy spots where I assume the water is behind the liner. Any advice o. Removi g the water and fixing the wrinkles would be appriciated. Our builder did not install vac pipe line as we are in PNW and they said it was unneeded