Re: Survey say's.......
Thermography and radiography are used a lot now to diagnose the extent of problems that used to require digging in with a hole saw or grinder. It works in some situations but not all.
I understand the issues you face are different. My clients own the boat and face an expensive repair that requires an engineering evaluation and repair procedure. Or else my client is a builder who wants to make sure that the surveyor found a legitimate issue. If so they want it fixed right and also want to know if it's something that may recur on other boats.
Hard to believe that people don't want to pay you for finding a problem that would have cost them many thousands of dollars. But in the boat business you soon learn to size up potential clients and just be too busy to work for the ones that you have to count your fingers after shaking hands with.