I had a pool installed by these people a few years ago. They took 4 months to install it because they didn't know how to handle a large rock during excavation. During installation of the pool walls, they backfilled early on. This caused the pool walls to start collapsing into the pool. They stabilized the condition and then tried to pull the pool walls back without removing the backfill. They finished the pool like that, with warped walls. The bottom of the pool heaved within a week of installation and they said they could not fix it.