I see people out in the sound in float tubes now and then. Very risky. I don't think most people realize how fast the tidal currents are or how fast the wind can kick up. Also, riding the wake of an 18 ft Bayliner in a float tube would be risky, let alone a tug boat or freighter. Might be ok in a pontoon on a nice day. At least with oars you can get around better.