Bubble - sorry, I didn't quite get your reference to "man soup" until you explained that your concern is not so much about sitting in re-circulating water filling with human fluids, as it is about being exposed to all that male flesh. So, just out of curiosity...would it make a difference if it was all WOMEN sitting in the soup? Because the last time I was on Peace, it was me and a few other scuba-gals sitting in the tub. Would that change the picture for ya? Me, I have no problem with sitting in there regardless of the genders in my soup. It's all just human bodies - we all got one!
Anyway, I wanted to respond to your question about post-dive hot-tubbing, because that IS an important point, and one that deserves discussion. I do know about this, and in fact did extensive research on it before I ever hopped into that "woman soup".
The reality is that it's not necessarily true that hot-tubbing after scuba increases DCS risk. It can, in fact, HELP with off-gassing. The determining factor is how conservatively (or not) your preceding dives were.
Rather than try to explain it, I'll just cut-and-paste from the DAN site FAQs about hot-tubbing after scuba:
Q: Is it safe to go into a hot tub or jacuzzi after diving? Is it also safe to take a hot shower?
A: Getting into a hot tub immediately after diving does alter decompression stress. As with many factors, the net response can be positive or negative depending on the magnitude of the inert gas load and the heat stress. A cold diver will have impaired peripheral circulation. The hot tub (or hot shower) will warm the extremities and restore circulation faster. If the inert gas load is small, this will facilitate and increased rate of elimination because of the improved blood flow (perfusion-based benefit). Larger inert gas loads can produce more problematic responses. Since the solubility of gas is inversely related to temperature, tissues will hold less in solution as they warm. Warming tissue with significant loads can promote bubble formation. Since the warming of the superficial tissues precedes the increase in blood flow, such bubbles can become problematic before the circulation can remove them harmlessly.
There is no simple formula to compute what constitutes a minor, significant or substantial peripheral inert gas load. The actual conditions vary as a function of the individual, thermal protection, physical activity and dive profile. Accepting the difficulty of computation, I encourage a simple rule of thumb - delayed gratification. Enjoy the thought of the hot tub or shower for a while instead of jumping in immediately. The period of delay will likely be driven by human nature. Those unwilling to wait will likely jump in regardless. These would be the best candidates to practice more conservative dive profiles. Those with more restraint may delay five to 30 minutes with slightly less concern over the dive profiles. Another compromise would be to employ a lower hot tub/show temperature. Much comes down to the thoughtfulness of the diver. Decompression safety, as with many things, is a matter of balancing strings of decisions so the net outcome is in your favor. My approach is to stack as many factors as feasible in my favor to compensate for the Murphy effect or chance that we see frequently in decompression sickness.
Neal W. Pollock, Ph.D.
For me, I don't have a problem using the hot tub at the end of the day. First of all, I tend to dive very conservatively anyway, so I don't expect I'll have a problem with large gas loads that will produce big bubbles as my tissues warm. Second, I don't get into the hot tub until at least 30 min. after I'm out of the water after my last dive. That's because I have a lot to do before I get to that point - I like to get all my gear disassembled and packed up, eat a snack, and have everything in order before I'm ready to relax (I know I will NOT feel like doing it once I've hopped in that tub!).
But you are right that it's important for divers to be aware of the risks, and if they plan on using it, dive conservatively, and wait for a while before they get in it.
Of course the hot tub is not going to be nearly as compelling for you dry divers. I personally prefer to dive wet, so for us wetties, it's a godsend!
Btw, love the LOLcat! Thanks for the laugh!