On an oval, there is special bracing outside and underneath the pool otherwise the straight walls of the oval couldn't hold the pressure of the water. Secondly, an oval takes a lot more time to build, so the installation costs are more. All of our pools are priced with an all-blue liner. Any printed liner hides the dirt and makes the pool look more elegant. The tile border liners snap in like a zip-lock bag, making liner changing easier and giving the pool a very expensive look.
Most customers choose to have a flat bottom pool.
If you have a round pool, we dig it deeper to the center. When you go deeper, you will need to upgrade to an expandable liner. We cannot guarantee these to be wrinkle free, although we will do our best to keep the wrinkles to a minimum. We do insist, that any pools made with a deep-end have a pool krete bottom. Sand does not provide a firm foundation for the slope and will eventually slide down, making the liner not fit well.