I think you miss understood. What I meant was when building our pool, I asked the excavator for a good plumber. He recommended a company. As a matter of fact he had almost every trade i needed. Plumber, steel, plaster, electrician. When contacting the Gunite/Shotcrete company, they offered a list of recommended subs. The two lists matched. Just trying to give you a direction for your hunt. Don't know anyone particular in your area but may try asking your excavator (if you have one) or any other sub contractor you have lined up.