I noticed this summer when I swam to one side of my 3 year old above ground pool that it seemed a little deeper. Now that the pool is drained below the skimmer and the winter cover is on and has water on it, I can really notice a difference in the depth between the opposite sides of the round pool. It looks as though one section of the pool is leaning outward further than any other side. The pool is on a small hill and the installer added some dirt on that side to bring it level with the other side. We considered a retaining wall over there but did not put one up. Is there a way to fix this without draining all the water out? Is it possible to add some supports to the outside pushing that section in or maybe going ahead and adding a retaining wall? I'm afraid that when I add water back above the skimmer level, the side leaning out will have water way close to the top or possibly spilling over. Any advice or direction to a similar thread? Thanks!