Hi, below is a transcript of the reply I received from Mike Ladle. I've not heard from Gilbey or Hayes yet.
Cheers Dave
Hi David,
Thanks for the email. I'm afraid that the IoM is not alone in having this problem. Huge shoals of mullet gather around Portland -Weymouth, near my home in Dorset, in winter and they suffer the same fate as you describe. There seems to be no way to stop it even though the fish are worth very little as food and most of the catches must be wasted. It is a tragic business and I guess that the National Mullet Club must be concerned, so it may be worth telling Dave Rigden
DavRigden@aol.com et. al. about your concerns (they may already know I suppose).
Very little is known about mullet spawning behaviour. As far as I am aware 'our' south of England fish may spawn off the Channel Islands in the spring so possibly these huge, vulnerable, shoals of fish are pre-spawning aggregations.
When I was a kid I used to holiday in Castletown, Isle of Man and I still recall with affection the massive grey mullet that fed on brewery waste in the harbour there. I guess that we can just keep nagging away at the authorities and hope that one day common sense will prevail and save these wonderful 'sport' fish from being destroyed in the name of greed.
Sorry I can't be more positive. Regards,
Mike