I was told that once they have there quota they carry on fishing for nicer fish for (2-3lb) fillets. If they get a net full they dump the smaller and bigger cod. Thats what i've been told, not cos they're catching to much.
a very tiny minority may do, most don't as it's costs them too much. The xtra they may make by landing bigger fish, they sharp lose with the price of the fuel. Some of th guys I know, with boats in the 65 to 75' range, are burning 10000 litres of fuel in a 5 day trip, and extra day towing to try to get better fish is going to cost them another grand or 2 in running cost, the price difference between smaller fish and bigger ones is not that huge. Most of the buyers operate something of a monopoly
Considering how hard to come by cod are supposed to be, this morning prices at peterhead we're as low as £1 per kilo for A5 cod, which are basically those that just in size, the better fish - A3 cod, usually between 5 and 10lb fish was as low as £1.50 a kilo, and the A1's which are the prime 10lb plus fish was as low as £1.80 a kilo
to make back a grand's worth of diesel burnt they'd have to find a lot more bigger fish, and if the gamble don't pay off, they can be out of pocket, and have lost some of their days at sea
shocking when you think that tesco's will be wanting getting on for a tenner a Kilo for cod retail, yet as one of the biggest buyers they won't pay more than a quid or so for it, some profit margin that is
FWIW, this mornings Coley price was 60p a kilo! and haddock was as low as 55p