I'll be sure to look out for the rock wall. There is no shortage of lures anywhere that I've seen so far, I usually pull 10-20 out each time I go down.
No it wasn't a GoPro (although I have mounted a GoPro on my rig from time to time). I use a Panasonic HVX200 in a Gates housing with Fathoms optics and LMI lights. It weighs 26kg fully loaded.