I recently made myself some ankle weights fromleaded lights just mooved house and i peeled all the lead of the window fashioned it into a 8" narrow weight weighing about 3/4 of a kilo. wrapped all this in insulating tape and just wear them inside my wetsuit along my calf. massive difference and streamlined to!!! as for the weight vest i couldnt recomend one enough, but i find if your out the water on the boat take it off your intercostals dont need the exercise!!! i have finally sorted my weight out and can lie, kneel comfortably almost feeling no pressure points whilst in the water massive difference from when i started with all my weight on a belt and getting bent into a U shape anchored round the waist not comfortable at all.
peace
Spud, At a quick glance I thought you had a good idea however after some thought I think it is pretty bad information to be sharing, no offence. There is people watching this forum that know nothing about weighting for diving. It shouldn't be forgotten that weight systems are designed with quick release buckles for a reason. In the event of an emergency you need to be able to dump your weight as quickly as possible. So depending on what way you are weighted this means, quick release belt, quick release vest, quick release ankle weights.
With regards to the vest, this shouldn't be over weighted and most of your weight should still be kept on your belt as this could be the only thing you get to drop in an emergency. And an emergency doesn't just relate to yourself, it could be your buddy. If there is a problem with your buddy you may need to drop all your weight and stay as high up on the surface as you can.
With regards to deep dives. As Sunfish said, technique. I don't see how dropping weights could be beneficial. What if you see something and need to get up and breath up and get back down, what do you do? drop your weights, waste energy getting it back up, then breath up too quickly, get frustrated, put yourself in more danger.
I use the padi technique for weighting myself. When you are in the water with your weights on, you exhale, you should be sitting on the surface at eye level with the water. If you sink your over weight. If you float you don't have enough.
Just my thoughts from what I have been shown , I'm open to criticism.