just to let you know got this from Cornwal Sea fisheries today re potting
here are no restrictions in the Cornwall Sea Fisheries District on the types of pot that you can use, but if you are fishing from an unregistered, unlicensed boat or from the shore, you can only land 2 shellfish a day (in total) from the following species: lobster, edible crab, spider crab and crayfish. You cannot store these animals up and they must be landed daily. Without a licensed, registered boat you cannot sell any fish or shellfish that you catch but from your email, I understand that this is not your aim.
Minimum sizes apply and I have attached a list of these for you. However, if you are potting inside the Fal estuary or Helford River, these areas are outside of our legal jurisdiction and some of the sizes are different (for example the lobster is set at 87mm in the estuaries and 90mm outside) but I would advise that for conservation reasons, our sizes act as a good guide and reduce the possibility of becoming confused between different pieces of legislation.
Finally, it is illegal to land any lobster or crayfish in the UK with a “V” notch cut into any of its tail flaps or one that has any of these flaps missing or mutilated. Within our jurisdiction, outside of the estuaries, it is also illegal to land lobsters or crayfish carrying their eggs, known as ‘berried hens’, or to remove those eggs, and I would suggest that this is good practise to apply within the estuaries for conservation reasons.
If you do shoot a pot or two, make sure that you use leaded line on the buoy rope to avoid slack rope appearing on the surface at low water, clearly mark the end with a buff or suitable can and take care not to shoot it over other strings of pots already in the water. If you already know how to rig and shoot pots, I apologise if this is unnecessary advice but we do occasionally get enquiries from people who have never used a pot before and I am keen to reduce any conflict between fishermen.
Seems straight forward enough