Hello! We currently have a vinyl lined inground pool in Ann Arbor. We are likely not a good fit for what you design as we do just want to replace the liner, coping, cement and pipes. The bottom is sand, not sure about the sides. Maybe you could lead us to the right person in the area if you are not interested in helping us out, or could answer some questions. I have not been able to find many local pool renovation companies close to A2 – any suggestions would be welcomed! Thank you!