I need help in identifying where possible pinholes in a liner would be. We have a couple of cereal bowl-sized depressions in the floor of our liner. These depressions are right in front of the cove, coincidentaly right in front of the buttresses, opposite sides of the pool. The water temp here is still a little chilly for me to get in to see if the depressions are soft underneath or not. Best scenario for me is some settling around the buttress and pressure plates. Worst case some holes. In any event, if they are holes, where would you think the hole would be? At the bottom of the depression, or along the rim? I was careful in manually vaccuming the pool last year, but in an attempt to do a good job, it's possible that I might have caused a hole or two with excessive rubbing. When we winterized the pool last year these depressions weren't there. Upon opening this year, it was the first thing I saw. So if it took 8 months to produce these depressions, the hole I would think would be minute, which in itself will be a pain to find. This will be the second season for the pool as last July was when I installed it.