Thanks for the responses. I realise where the tugs haul barges along Bowen and the trap line wasn't in that area. There were other traps in the same general area as mine as well, that were also gone when I returned. Although, of course I don't know if they were picked up by their owner(s) or otherwise. If the tides took my weighted traps, I couldn't find them anywhere nearby. Additionally, I would've hoped anyone finding them would notice my name and phone number on the scotchman and call me. I haven't received any calls.