So much like taking a story-plunge. A ton of tinkering, adjustments, hook-ups and prep-work beforehand to make it safe enough, pleasurable enough, before delving into the unknown.
"What are you looking for?" I asked, and they said, "Can't say. It's top secret."
Lots of old bottles down there, and golf balls.
And a ton of other stuff too, apparently.
But you start with what you know, then keep going.
So many treasures, gathering rust and barnacles.