Years ago WDF had a system that got 95% of the commercial catch reported within 3 days. they have to sell to a buyer, the fish tickets can be summarized every day. Canada used to have what were called "hails". The fishermen had to call in their catch. It can be done, it has been done.

True, it might cost some money. If the fish aren't worth the money, then simply say so. If the state does not wish to invest in good accounting then we eiother have no fishing or just fish them into extinction.