That’s awesome DavidFL.... which doubles system was most comfortable?
In and underwater, the banded, manifolded doubles felt best on me. I was doing a lot of acrobatics (some deliberate; some new dry suit induced; some from the rising boil in Alexander Springs). I only spent about 30 minutes in each configuration, and all that moving around of tanks in sidemount felt....strange, but not uncomfortable. I ended up setting up my HP100s as banded, manifolded doubles and I'm actually doing stair climbs in my townhouse with them on my back (my wife is convinced I've totally lost it). But I came away with a very clear understanding that the sidemount option is waiting for me just as soon as I decide to stop punishing my aging chassis.
My vanity only recently gave up and started accepting senior discounts without being terminally PO'd, now your suggestion is I start warning insta-buddies about 7-minute safety stop and translate that into decades for them?