I have sailed , as a Guest, at the Brightlingsea lake, easy access, some of the friendlyest guys you can wish for and as the lake is brackish water, I should imagine no weed problems. Wednesday and Sundays if I remember correctly, before lunchtime. Everything except ic, there was even one guy there with a Seaplane! As I said, a really nice crowd! (They make a mean cup of tea and only 200 yards away is Batemans Tower which serves the best Bacon Butties in Southern England!)