I carry floats with a clip that say "Abandoned Pot" which I attach to those that my flattie jigs manage to bring up and are obviously derelict or have no floats as we're not allowed to bring them back to shore. A few are in reasonable shape with the owners name on them, it looks like either raided and floats cut off or lines cut by passing traffic, I usually send them a txt msg with a GPS location of where their pot is but have never ever received a reply back.
The State Govt was going to legislate a couple of years ago that light weight pots would be outlawed but that went by the wayside when CV19 came along and hasn't been resurrected to my knowledge. I believe the proposed legislation didn't go far enough and should have included a weight at least 1 metre below the float, this would alleviate a lot of cut offs from passing traffic. I use them when I crabbed, don't anymore because of the share farmers, and I found even picking up the pots was easier with the weight. I still see light weight pots being sold everywhere.