It use to be quite popular until the '90's when people started being objectionable. Like 'On Golden Pond', my family as well as the neighbors always go skinny dipping in days of yore. I remember cruising around and see bare butt boaters, especially on sailboats.
Now the MP's are cracking down on nudity. They usually give you a warning. Many people are calling in and complaining. I guess the atmosphere is really changing on the lake.