Think of it this way...
A diver with a single Al80 only needs enough weight to offset the 6 lbs of gas in the tank. That's all. So, at any given time, a diver never needs to be able to swim up more than the weight of their own gas. How is dropping a weight belt underwater solving a problem? All it does is increase the odds someone will need a chamber ride or worse, embolize.
Plus, unless you have weight that is ditchable in pieces, dropping a 15 lb belt from 100 ft ensures a rocket ship ride to the surface. Better hope the boat is close and has plenty of O2.
This, of course, assumes a properly weighted diver.[/QUOTE
Ha! ha! You wouldn't believe the round and round I go through with other divers about this weight issue.....Yes sir and I agree to some extent to what you're saying. We do a specific kind of diving where you tend to overweight because of working the bottom in fairly strong currents and I wear a 6 mil farmer john, - it's not for everyone but most of us like to be heavy...it's a preference. I don't guess I need to get started talking about not being able to see (bad viz) the press gauge and "guessing" at the air I still have left in the jug, and sometimes misjudging.......anyway all I'm saying is that different types of diving require adaptations. At 30-40 ft I can and have dump my belt with no ill-effects. At 100 - forget it - I wouldn't even consider it, unless I'm losing consciousness and it was my last, last chance.