You may find it hard to believe but a lot of us wear weight belts to hold us down!
Ironic isn't it? Mask and snorkel are on the top of the list and thought about an inflatable vest myself but if it's not an emergency CO2 quick fill type you may not have enough time to blow it up. I recall a few times I was in some real hot water. Tried to cross deep water from shore to sandbar and found myself struggling to stay above water. Like a ships captain I was going down with my machine and scoop clutched in my grip. I remember thinking no way will I leave my gear behind. They'd pry it from my hands I guess.
In a situation like that a co2 vest would have came in handy. Not a bad idea.
Be safe and plan ahead!
Sent from my iPhone using TreasureNet