As of now, I could be out on the Tees (and rivers north of it) fishing for trout. The byelaws allow for worm (leger or float is fine) or fly fishing. However, many club rules do not allow the worm. Any kind of loose feeding or groundbait is illegal.
In a few days time, the situation will be the same on the Yorkshire rivers. In reality, there's nothing much wrong with the byelaws as they stand, it's people that use the byelaws to fish in inappropriate areas, or with illegal baits, that are the issue. The lack of effective policing doesn't help.
By catches of non-trout species can obviously occur. However, as I've been informed by the EA, anyone continuing to catch more than one coarse fish in a particular area is breaking the law. You are supposed to move locations if you start catching coarse fish.
It has never been as simple as seeing someone doing anything other than fluff chucking, after the 15th of March as illegally fishing. However, if they are worming in parts of rivers that wouldn't normally be considered as being "trout zone", they are undoubtedly extracting the urine.