Check for local cell tower upgrades messing with your signal. Providers often tweak towers and don't tell anyone, causing temporary lag. This could match your pattern of delays on multiple jobs.

Heard about ground-penetrating radar being used on some dig sites... is that the kind of tech you mean? A buddy in construction showed me a report from something like that, and it mapped out stuff you'd never see just by looking at the dirt. It makes a lot of sense that you'd catch more with a scan before you even break ground. Seems like holding onto the old "must be there in person" idea just slows things down now. Your example with the carvings proves the point... better tools just give you better eyes.

Man, my buddy's old showerhead was such a water hog it sounded like a fire hose.

Honestly, how bad could it really be?