My parents just spent a fortune getting their pool re-plastered and the deck area refinished. We live in AZ. My mom said there are ridges or ripples in the plaster in the shallow end. She asked the pool guy about it he said it was normal... Is it? I'm not sure if it's related or not, but it was raining intermittently during the plastering process. I already think my parents spent too much money, and I'm wanting to make sure they get this fixed right away if it's not normal. You'd think a smooth flat surface wouldn't be unreasonable, right? Any advice or insight would be much appreciated.