Here are the views of a very well known Scottish trawlerman from Perth. Jimmy Buchan's position is typical (he's no relation of Charles Buchan). He achieved national fame as the star of a BBC TV series, Trawlerman. When we meet on the dockside in Peterhead, he greets me with a cheerful grin, and friendly, avuncular manner. Yet he makes no attempt to hide his contempt for the regulations that the European Union enforces.
"Unelected bureaucrats who sit in Brussels don't care about local communities," he complains. "I've waited all my life for this EU referendum. I'm voting for Out."
And.
The various organisations that represent fishermen are not taking an official line, but all told me they thought that the majority of their members would be voting to leave.