No spearing for you?
Nope, I only had time to dive once when I was done hooking up a couple of mooring buoys. I figured I'd burn the last half of my tank since I was already geared up. I dropped off the boat but by the time I got down to 35 feet, it was so dark I couldn't see the bottom which I knew was only ten feet or so below me, so I popped back up.
I had a heck of a time cocking that gun, I can't imagine trying to do it underwater.

I had to put most of my weight behind it to push it in. It also didn't seem to want to lock the shaft in, is there a trick to that?