I have dove alone only a couple of times. The times I did it was when I was preparing & practicing for my instructor course. I hadn't reviewed the skills in a while & was trying to keep from embarrassing myself & boring a buddy to death. Before I did it, I talked to & let the owner of the quarry know of my plans & that I needed the practice. We set the parameters of the dive. I was to stay in the shallow part of the quarry on a training platform (in about 18- 20 ft of water), the dive would be 30 min. The owner had someone there, on shore, as a spotter for me, just in case. I went in, dropped on the designated platform & started practicing. 30 min later I came back up, swam in & that's all she wrote. Pretty much a non event. I personally would not advocate solo diving for anyone else & there was a bit of planning that was done before I did anything. If someone else chooses to do it, then that's their thing, I will not condemn or condone. There is training available for those that are interested. It does & should involve extra planning & extra equipment for the "what if's" that might occur & the diver should be completely comfortable in the water & with their emergency skills. In my technical training, we are taught that though we will dive with a buddy or in a team, we must be prepared to do it alone if circumstances dictate that, being that there may not be direct access to the surface due to decompression obligations or possibly an overhead environment. As for getting into my gear by myself,.... I do it all the time. My recreational gear is quite simple. My technical equipment is not quite so simple, but I still must put it on & adjust things myself. The quarry is set up with some very nice gear tables that are the right height for most people (unless you're really short or really tall). You just assemble your equipment, make sure everything is working & good, unhook the holding string, then back into it, fasten everything & adjust it & away you go. As for logging the dives,.... I just fill in the log book the same as if I were diving with a buddy, just no name in that spot.