Flyguy's photos from above are terrific!
Sunday was a very busy day on The Broads. The direction and intensity change of the wind was the key factor.
Monday in the late afternoon there were only a few boats. Many people headed back home early?
I do have other observations of the lake traffic, on The Broads anyway, but if I share them, it could change the patterns.

APS, you have mentioned the loss of pine trees more than once. Wouldn’t the natural progression of a forest change the trees in it? Not that I am arguing about what the pines do. Are hemlocks just as good? I like them because there is no pitch to track into the house. (Now if the deer would cooperate and stop eating them!)