@Adam-Parvi As someone else mentioned, I've gotten more empty ruins cans than loot-pinata ruins cans, but the occasional good ruins can can have 20-60m in pirate components. I always hack everything in a C1-3 that isn't a sleeper site, and I'll take my share of empty ruins cans along with a good number of decent remains cans. You'll find that over time, decent remains cans will end up funding you, more than a few jackpot ruins cans. And don't curse the empty cans, the time hacking them is a sacrifice to BoB.
Cargo scanners are the devils plaything and no self-respecting explorer should use them!