Yeah, and with the unplanned excursion into a little bit of decompression on that sawtooth profile didn't really involve much conscious thought or even communication. I did consciously think something like "we've spent 10 minutes scootering around the honey bear, so that fixes the fast compartment issues with that 90 foot bounce", but the 15 minutes of backgas deco wasn't communicated other than we just wound up hanging around 15-20 feet for 15 minutes. I didn't even think about the fact that the 90 foot excursion had happened 10 minutes after the 100 foot NDL so we were doing about 1.5x deco. After awhile you just get a sense of how much of a mistake you've made deep with your profile and what is more than sufficient to fix that shallow...LCF wrote:Lamont, that post is a perfect example of what I was trying to say in mine above. You have the tools and the understanding of what's going on, to be able to decide what you need to do, based on where you have been and for how long. Being able to envision the model and how it is going to assess loading in various compartments, gives you a good gestalt for where you need to go and how long you probably ought to stay.
For purely recreational shore diving, though, the algorithm that I use on 32% is:
1. send no more than 30 minutes at no more than 100 fsw
2. ascend promptly to 50 fsw or shallower
3. spend no more than 30 minutes between 50-30 fsw
4. spend 5-10 minutes of deco coming up from 30 fsw
I've done a ton of dives following that profile. And usually if you do #1 and #2 correctly then the temperature or bladder issues will get you out of the water before you need to bother thinking about decompression. I usually don't think that much about #3 and #4 but the profiles just work out that way.
It's probably easier to hit decompression issues on 32% if you're diving square profile (wreck) dives to 80 fsw (where you'll probably not want to sit around doing 10 minutes of deco at 10 fsw because there's nothing to look at other than the upline). But we don't have a lot of dives like that around here. 1-1-2-3 deco or something like that will be pretty clean though.