Sam didn't put too much attention into this hidden seashore. If he really wants to know what is happening there, he has to go there himself. The trio can make some chaos with their hoverboards but they wouldn't be able to get past them and stay safe much less coming back safely.
The only way they can infiltrate this area is with the use of shadow mice or his own shadow mode.
Any direct way would be too hard.
For now, he has to focus on reducing the tax target and improve his business.
And soon there is a chance. Because as soon as the builders took over the cement factory, they indeed messed with the engines to check the structure and operating mechanisms and Sam is very quirky about protecting the mechanisms.
And for the steam engines, he made very different arrangements.
First thing is that an array of inscriptions on the surface of the engine head and the bolts that are holding it up.