You know, Ks54, you hit it on the nail. The hooker-thing is a bit for me, but I get your "point." If a person deep dives by themselves, that is, farther than he or she will have ready access to the surface, for me, that seems like playing Russian Roulette with a single shot spear gun. Yet, that is just my idea on that. If you are a photographer or instructor the hard and fast rule against solo diving is illogical. Diving is a tango, and the more you dance with a partner the better it will get. I would rather dive solo where 100% of the dive team were focused, experienced, planned, and ready to pull the plug on the dive at a moment’s notice. If you are taking along someone because the "guidelines" say you have too, that same guideline does not promise that the person you are thus taking along is experienced. To people who argue that an underwater photographer working at 15 feet absolutely must have a dive partner, I would argue back with, "Okay, just how many dives do you really think a diver must have before they are 110% truly natural underwater?"