I attended Camp Wyanoke from 1969 until its closing in 1975. I made many lifelong friends from my summers at Wyanoke.
Up until the mid-70s, Winnipesaukee had a rich history of private and non-profit summer camps. I have fond memories of competing at swim meets at Camps Alton, Belknap, Idlewild and DeWitt.
As another poster suggested, economic pressures forced most of the private camps out of business by the mid-80s. When real estate values are skyrocketing, it's pretty difficult to absorb rising property taxes with a seasonal operation.
On the one hand, I feel a great sense of loss seeing all those mega mansions on the old Wyanoke property on the shores of Winter Harbor. On the other hand, I wish I could afford lakefront property on Winni.