You can definitely ditch the weights, one or both sides, whenever you want. Just pull the big yellow rings assertively. I've done it a few times. However, putting them back onto the harness requires threading a thick nylon line through six or so eyelets with the harness off. This won't happen in the water. On land or boat this wouldn't be a big deal to do though.
The release is very positive though, it isn't going to release accidentally. I think that is why the OW skill is there for replacing your weights when they slip off or out.
The release is very positive though, it isn't going to release accidentally. I think that is why the OW skill is there for replacing your weights when they slip off or out.