I live on Lake Hopatcong and fly my electric Seawind and Blade 400 w/floats all the time. It's a very busy lake though so the only time to fly is really early in the morning or right before dark. Too many boats otherwise. It does calm down a little after Labor Day but I still think it's too busy to have a fun fly. I would definitely be interested though if you find another suitable location in Northern NJ.
Rick