There are the odd few good high doubles in the broads, but they are pretty few and far between by all accounts, know a lot of anglers in this area and not one of them has had a carp from a broad, know a bloke who has had two 20lb+ on rivers connecting broads and he's been back to those spots and never caught another, also get a few carp in the wensum in the lenwade area that have escaped lakes via whatever means, a real shame in all the years spent in my youth fishing rivers and broads and never had a carp
Will check out the book jemsue3, must be able to find a copy in the library