Now that the details have been posted, I’ll add here: diver had publicly posted on FB in response to my question about practice with the pony at the quarry (he had posted a question about weighting) that he was going to practice with it in a friend’s backyard swimming pool the day before the dives on the 130ft wreck. It was very clear he considered that sufficient. He seemed more concerned about his weighting with the pony than actually practicing with it.