Henceforth the bailiffs shall, at least once [during their term of office], in person or by suitable deputy, carry out upon the waters and streams within the full extent of the jurisdiction and liberties of this town a search for unlawful drag-nets, trammels, bow nets or other nets, or hurdles made, set or used contrary to the laws, statutes or ordinances made for the common good. Periodically (at least once a year), information about these infractions is to be presented to a panel of 12 men, chosen and sworn to enquire into all such infractions, without any concealment; fines and amercements stemming from the same are to be levied by the bailiffs to the profit of the community.