Funny you should ask. The divemaster was asking me all sorts of questions about double-hose diving in general. She asked if she could try my rig and I let her. Of course, the lawyer in me hastily penned out a release of liability that I made her sign. I used the boat’s waiver form and modified it accordingly. As she goes to put her arms through the straps she knocked the whole tank over and it hit the deck with a mighty thud. Everything looked ok so she picked it up, put it on, and jumped in the water. I immediately saw massive amounts of air leaking out of the inhalation hose right at the cans. She started sputtering and getting water in each breath. I grabbed her, brought her back to the surface and helped her back on the boat. Upon closer inspection we found that the fall had cut/punctured the hose. I still need to replace the hose so I’ll be putting in an order soon. She didn’t seem too keen on vintage diving after that incident. Plus, she was embarrassed because she, the divemaster, had to be rescued by an old fart like me.
Off topic, but for fun here is a lobster video I just took with a GoPro camera. It is head mounted and I still haven't got it pointed properly yet.
"The diver who collects specimens of underwater life has fun and becomes a keen underwater observer. .. seek slow-moving or attached organisms such as corals, starfish, or shelled creatures." (Golden Guide to Scuba Diving, 1968)