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The fact that you state is wrong most big carp waters now allow barbed hooks as the barbless is being found to move about more in the mouth doing more damage, my Drennan rep told me they now sell more barbed ESP hooks than the barbless ones. It is entirely up to the angler I know but as most people on the broads use maggot or worm they tend to stick to the barbed I should know I sell thousands of packets of them a year and the barbed outsell barbless but a lot.
They have as stated banned barbless hooks from big carp waters, however barbless hooks are still better for silvers and small carp in my opinion I don't seem to have problems with maggots and barbless hooks and I have been using them for donkeys years now, ready tied hooks are that good these days that it is not worth taking the trouble to tie your own unless you want different hooklink lengths than the standard.
For me micro-barbed or barbless for 14s and smaller anything above is micro-barbed. I once was in a club that introduced a barbless only rule and when carp fishing I caught a 19lb mirror that I have to say I inflicted hook damage upon. I treated the fish and it would have been OK but scarred! I left the club after aguing that the rule needed to change for specimen fishing... They have now some years later reverted back to barbed hooks!