The regulations also breach the 21-day rule, but that is okay because it is sensible to keep the regulations in line with what is happening south of the border.Sea Fish (Prohibited Methods of Fishing) (Firth of Clyde) Order 2002 (SSI 2002/58) Sea Fish (Prohibited Methods of Fishing) (Firth of Clyde) Order 2002 (SSI 2002/58) No points arise on the instrument, so you can come up the Clyde in your fishing boat.