.... I would say ... probably Hickling.
Hickling is fine as long as they get rid of all the weed !_!
This year 'herself' took Streaker there and came home after not even completing one race, .... 'cos it was soooo weeded that racing became a stop-start lottery !
Broads Authority have now cut the main channel, but the edges remain very dodgy.
I understand that club courses through the summer have stuck to the narrowest of channels.