Hey Trevor! Jimmy Black here. We actually did our first summer with an in-house Dive instructor and it went very well. We have been incorporating sailing and boating ever since we started and plan on doing a lot more in the future. We also have a Surf themed hostel in San Diego and a SnowBoarder / Rock Climber themed hostel in Big Bear. These nithces have worked very well for us. I suggest you keep pushing forward with your idea.