Dr. Lecter
Contributor
Good so don't "pontificate" on something y'all absolutely know nothing about.
You aren't doing these dives consecutively like the Truk Dive Guides over a month's time (and myself on Ratio Deco with non-standard Deep Air since 2007) --so wtf do you all know?
I know multiple days of at least one and usually two 200'-240' air dives (often longer than 50 minutes you mentioned) is nothing particularly impressive, Kev. You're hardly the only one in this thread with experience doing that, and the difference between you and me of a year or two ago is that you only did that stuff a couple weeks a year. The other guys in here may never have dove air past whatever magical limit DIR imposed on them, but that ain't me.
And what I'm telling you is deep stop profiles for such dives produced for me similar, though less objectively bendy, results as you're reporting. I had two choices: slap a ultra low surfacing GF on top of the deep stop model's output, or, try something different. Both "worked," but having tried each way I think less time (not zero time) on deep stops that aren't nearly as deep is the way to go. YMMV.