I have had numerous problems with my semi-inground pool that are mostly related to the pool supplier/installer. I have called and they are incredibly unhelpful and rude. My biggest complaint is the floor of my pool. I don't know anyone who has a pool like mine so I am not sure if it is normal or not. I have an Oasis 15'x24' pool. There are beams that run across the bottom of the pool. The sand on the bottom is incredibly uneven and the liner is "sucked" around these beams. At the junctions where some beams form a corner, there are divets that are about 1/2" deep. The beams are so prominent on the bottom of the pool you can literally trip on them if you are running around in the pool. Is this normal? Thanks for any input you can give me!