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@Valéry: Time-out. I'd like to caution you about trying to do too much too fast. It might be a good idea to gain more experience doing recreational-type dives (staying within NDLs) before doing deco dives. Your SB profile indicates 25 - 49 dives if I'm not mistaken.Valéry;5205523:Well I'm talking about both tech and recr diving.
I know that on O2 I should stay at 6m.
Now decoing with 50% or with air (most of our dive are small deco with air) and knowing that I can set my computer last stop at 3 or 6m, should I care about the gradient and do my last stop at 3m? My instructor state that you off gaz better at 6m while another 1 state that your not doing any good by staying at 6 and he can't find any good reason not to do my last stop at 3m, and that I'm doing no good in terms of off gasing by staying at 6m.
Still can't make up my mind on what's best for me.
Valéry;5204418:I know there might not be a correct answer for this question but I'd like to have an instructor point of view on the following:
Why should I set 6m for the last stop rather than 3m?
Well after speaking with my instructor he insistes that more and more tech diver are now doing there last stop at 6m. I told him that it must be because they are doing there last stop with O2, but he kept telling that it would be better for me to do my last stop at 6m even with air.
What do you think? Some argue that the 3m stop shouldn't be replaced with the 6m and other says that you off gas better at 6m so what's the real story???
Your last stop is at the surface. Everything else before that is just about how you get there.
Here's a thought: You can extend the 6m stop (or any other stops shallower than 6m) indefinitely.... If you can't choose between doing a stop at 6m or at 3m then do them both.
R..