There is no case with the eastern europeans Adrian, nor the canoeists or the dog walkers. You must argue for the principle of the close season if you are to use something other than it's principle for it's abolition, it's a case of simple logic. If you disagree with the principle of the close season you must argue against that principle, not against something unrelated.
Like I said, if you argue that eastern europeans are the issue in taking fish for the pot, you are actually arguing for the close seasons overiding principle, and, therefore must logically look to have it policed, not abolished!
It's akin to having an offence removed from legislation on account of there being too many committing the offence - well, it's not akin is it, it's precisely the same! We don't require the police to remove offences from law do we, we ask them to get out there and catch some criminals!
We pay our taxes to the fund the NHS but we still donate to causes relating to our good health! We still pay our licence fees to fish, yet we still donate to causes relating to the upkeep of our rivers. Here, in this situation, with little alternatives coming to mind, we need to act ourselves to protect our fishing.
Regards
Damian