That will be the problem Peter unless anglers can identify the paddlers and their details there is no chance of doing anything about illegal paddlers. Who will stop them?
The EA have no interest in stopping it, they are far to busy not talking to their different departments and decimating bankside habitat to do anything.
Police? I can just imagine what type of response a report of illegal paddling would bring.
Imo the only way that anything can be done to send a clear message out is one that has been posted by Steve in the past, i.e. a concerted team effort from clubs and authorities to bring them to court, more chance of my hair growing back I reckon.
A bucket of paint tipped onto them from a bridge would enable identification at a later time wouldn't it?