“First put forward by Louis de Broglie in 1927, the interpretation treats quantum objects just like classical particles, but imagines them riding like a surfer on top of a so-called pilot wave.
The wave is still probabilistic, but the particle does take a real trajectory from source to target.”
I think deBroglie was about 90% right. What he missed is that the particle IS the pilot wave. It just has a standing wave at its center that appears to us as a particle.
The evidence is collecting that waves are physically real things, but what the wave medium is is anybody's guess. If there's an edge to the wave medium, any waves hitting it should bounce back like hitting a mirror.