I agree with the belt under crotch strap idea. I'm much more worried about losing weight at depth than I am about making it optimally easy to get my weights off me. But I also dive a drysuit, so I have redundant buoyancy.
The only time I have lost a weight belt, it was with a plastic buckle. I promptly replaced every buckle I owned, on everything, with good quality metal buckles, and I have never had a buckle open on its own since. But I HAVE lost a five pound weight out of a pocket weight belt, which is one of the reasons I now use old-style hard weights threaded onto a belt.
Optimally weighted (and it's been checked repeatedly), I carry 20 lbs of weight on a belt. That would be a horrible amount of weight to lose at depth.
The only time I have lost a weight belt, it was with a plastic buckle. I promptly replaced every buckle I owned, on everything, with good quality metal buckles, and I have never had a buckle open on its own since. But I HAVE lost a five pound weight out of a pocket weight belt, which is one of the reasons I now use old-style hard weights threaded onto a belt.
Optimally weighted (and it's been checked repeatedly), I carry 20 lbs of weight on a belt. That would be a horrible amount of weight to lose at depth.