We are replastering our pool... the guys came to do the prep work today. We were expecting to see a pool with the old plaster scraped off. They scraped it off down about 6 inches from the coping tile, and 'roughed up' the rest of the surface and then put on the bonding agent. They went over the top of the plaster they had roughed up, even including the decorative tiles on our steps and sun deck, with the bonding agent. I guess we were expecting to see more plaster removed. Can you all help us with what is typical for a replaster? Do they typically scrape off all plaster? Thanks in advance. We don't know a lot about pools and are wondering if we are getting ripped off here.