Nice spark! I'm with Dwight on his suggestion.

We have plenty of fish cleaning stations around here, due to the charter activity on Lake Michigan. Some of these are really nice.

The owners of one at the docks in GH were having issues with a few of their patrons operating the disposal.

This has a Start button on it, which obviously start's the disposal (flush water too), then it has a STOP button, which one would think it should turn it off, right? Not so my friend. The Stop button initiates a shut down of the disposal and we are looking at motor current to be within a window that tells us, yeah, it's cleaned out really well, then it shuts down. More to it than that, but you get the idea.

Well, there is an Emergency Stop button on this. People assumed it worked like a household disposal where you flip a switch to be on or off. That was confusing to quite a few. There is a BIG sign right in front of them on how to operate this gizmo, but nobody reads it. They hit the stop button and nothing happens. They panic and slam the E-Stop. They feel good because it shut off, but the disposal and piping is still full of their stuff waiting for the next patron to do the same.

Yeah, there is formal training on this now by the owners to the patrons that utilize this facility.