Water is nothing to mess with. This Summer saw what seemed like a higher than usual number of deaths of strong swimmers in Lake MI rip-currents. At some point in my childhood my dad told me what to do if faced with these sorts of currents (even though they weren't as much of an issue on the WI side of the lake as they are on the MI side, where I now live). It's surprising how many people take the inherent dangers of a massive inland lake for granted because it's not a large body of salt water/ocean. We can have enough wave action for people to surf on the lake, too, which surprises a lot of people who have never seen a great lake during rough weather.