Good for you! I took my AOW about a month after my OW class, that was last Oct. I'm pretty much finding out that around this region going below 60' is cold anywhere. When I did my AOW deep dive at Pennyroyal the temp at 85' was about 45-48 degrees (pretty much stays that way year round), while it was 74 degrees at the surface. We did the deep & navigation dives (though, today I still couldn't navigate my way out of a paper bag if I tried), a night dive, a wreck dive on a school bus & search & recovery dive. I had a blast except for the deep dive. I had to abort the dive early due to multiple equipment issues that, in the end caused my reg to freeze up and try to cut the air off to me, causing a bit of panic on my part. I still got credit for the dive, though because I was down for a while before I had the complications. Let that in no way deter you from the enjoyment you will get by doing it. I haven't. In fact I look on the whole episode as a learning experience (positive, not negative) & I have done a couple of deep dives since (in warmer caribbean waters of course). The diver propelled vehicle part sounds like it will be a blast! I always thought those scooters were cool. I too would like to try Nitrox sometime, although I don't know when my instructor will offer it, because she says Nitrox doesn't do much for her, so she really doesn't like it & doesn't offer it very often. I'm hoping I can pick it up sometime in the next year or so. I will be doing a boat diving & peak performance buoyancy (man, do I need this on bad!) specialty classes in a couple of weeks.