OWS in lake Champlain?

Ok - this may seem like a silly question - heading up to Button Bay on lake champlain during vacation next week - I'm assuming I'll find a good place to do some OWS practice, but don't really know.  Any particular place I should go to practice?   Not sure if I'd only be allowed to swim out in an area with lifeguards?  I know that NJ state parks won't allow you to just randomly go out and swim.  Any info would be great - thanks!