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Personally, I think sidemount is often a status thing. Sort of like getting the "cool" and "different" status of a rebreather without spending 10K.
Side mount is great in those places where you need it, or for divers who can no longer haul doubles in and out of unimproved sinks.
Madison Blue has a lot of low areas, but sidemount is overkill.
Back mount is a lot cleaner in my opinion and should still be the default unless you really need sidemount for the majority of dives you do.
That goes without saying. If I were only to need 130 cf of gas or less, I would settle for a single tank with an "H" valve, and you can bet I would only be diving OW with a buddy. I might venture into the Ballroom with such a rig, but that would be the extent of it.How "clean" back mount is compared to side mount also depends on the amount of air. It would be pretty hard to side mount 120CF of air to be as "clean" as my triple 40s.
Side mount excels more with larger volumes of gas.
There is nothing you can do with backmount, that you can't do with sidemount.
Actually, if taskloading isn't for a person, then they shouldn't be in a cave. But you're right... I don't buy the "cleaner" comment. Backmounting is more traditional, sure. But you have the same gear (except for the isolator bar) and the same diver. Except for having to change regs every 300 psi, everything else is simply the same or easier!
However, reducing the total amount of weight you carry at one time does reduce the strenuous exercise needed to dive caves. This physical stressor is something that is good to limit, especially on extraction, where this type of activity can cause bubbling.
I can't tell you how many times I have overheard: "I'm gettin' too old for this $#@&!" when a caver puts on a large set of doubles. Brethren, this ought not to be!
I hope to have my rig fully operational by this weekend... just in time for the Florida Dive Show, where I won't get to use it at all!
With all the recent medical deaths, I don't really see that as a good thingPersonally, I feel sidemount will allow more cave divers to dive into their 60's, 70's and maybe further