not knowing your projected dive profile/need with this pony tank, of course.... but I'm assuming shallow dives....such as cleaning the bottom of a boat, or work in a pool.... so I'm wondering why you couldn't just go old-school. No BC
maybe something like this.
or
I picked up something similar to these, a plastic harness/plate years ago somewhere...a garage sale maybe and I've used it a few times with a 30 CF pony in my pool, and no BC. I wouldn't hesitate to go on a shallow dive with it in easy conditions
I'm reminded of a charter boat dive I made a long time ago somewhere in South FL. It was when I was still in the "make-it-complicated" stage of diving. Schlepping all sorts of extra stuff onto the boat in my gear bag in the name of save-a-dive with spare parts, extra stuff...diving with all sorts of needless stuff clipped to my BC.
Anyway, it was I think the second dive on a 2-tank charter trip...so a relatively shallow reef dive. The boat captain decided to jump in and join the dive. I'm down there poking around somewhere under the boat, probably 30-60 ft deep on a reef when I spotted him...and noticed that his BC, a very old, faded, and ragged looking jacket style.... his corrugated hose was dangling...and there was no low pressure inflator even attached. Just an open-ended corrugated hose!
That was I think what opened my eyes to the idea of keeping it simple. I still don't exactly, but I do think twice a little more before bringing along gear.
