Mate sounds like a shocker of a trip.The sooner the names of the skipper and decky are out the better so others arn't caught out. I'm sure the owners will change them over as it's not good for any future charters.
I've done some charters on the Tasman Venture and found them a excelant service with a well run boat and crew. All fish are put in a brine tank to start off before being cleaned.