I'd agree, anyone mixing with large commercial craft needs to know the rules. I still feel that, if you go down the Humber, you should have VHF, I will admit I have changed my stance from when PoLA first introduced the requirement on the Thames through London, if you want to mix with the heavyweights, have the heavyweights tools.
The Manchester Ship Canal Company changed their entire policy because of one twat, on a convoy, who steered too close to a ship going the other way. Thanks Mate, even the IWA wrote to you and told you (in more guarded terms) that you were a tosser. Why do narrow boaters insist that they are invincible? And before anyone cites Chris Coburn and Progress, or any other sea faring narrow boaters, it was being cautious that kept them alive