G/F and her two kids and I are starting a plan to go to Saratoga for the races at some point this summer. This led me to thinking about the possibility of diving Lake George. I'm a relatively new diver (AOW) but her son, 19, is very new. We dove St Thomas and St Kitts last year together. Are there guided group dives, or is everything on your own? From some quick Googling, it looks like many places require reservations. What are our best options?