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No idea what you mean by this, but it made me wonder: What kind of training and experience would you look for in a support diver? For example, would they have to be trained to the level of the dive being done?
I was just joking about how the proverbial "PADI diver" is willing to do no stops at all on a recreational dive. Hence they have even less than a "minimum deco" obligation, so they could run support for recreational, min deco DIR dives
Basically the barometer of a support diver to me is that they need to be able to give and receive bottles and scooters off of a diver in duress. They need good buoyancy midwater otherwise their bouncing around is counterproductive. Dean Marshall had an article on OW support back in Quest 6.3 which addresses some of this. His recommendation is that support divers should be meeting the team at 70ft but be on 21/35 so that they have a sufficient vertical latitude to address significant problems much deeper. So that would suggest "Tech1" or comparable training.
His second point is that in the open ocean (like 30 or even 100 miles off shore) part of the support role is to maintain boat to decoing diver contact. Because getting lost is such a serious condition and much more likely than a lost deco gas at that.
I don't think its as simple as saying a 2 bottle dive requires support. The Steele and Warren cars in Lake Crescent are easy peasy without support. And I didn't think my arse was hanging way out there on that deco.