Good honest post.
Most of us have screwed up big time in the past and been lucky enough to learn from it rather than pay the full price. Only a few would admit it.
This sort of incident, if survived, is a valuable lesson.
This is one reason I prefer BOVs plumbed to off board gas. If you lose the dill then at least you can still bailout to the BOV.
I don't do rushed stressed gear prep. Back in the day when I did this is the sort of mistake id make. On one OC dive where I jumped in wearing a very negative set of 15s and two steel 10s for deco, I couldn't find my wing inflate the only thing that slowed my decent was hitting the sea bed

Wing inflate was behind my head.
ATB
Mark
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Is it supposed to make that noise ?
I took my unit to the dive shop and demanded they bolt on every thing that would fit.
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