We are going to start a post that captures lessons that the learn as we move along our trip.
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Do not have anything in your pocket while working on the boat that you don’t want to lose.

This is not a new lesson.  I learned this when my glasses were contributed to Neptune last summer while taking Lucky to shore one morning.  But we continue to learn and this time someone had their keys on them while we were stringing up the dinghy.  I won’t mention names, but it wasn’t me and it wasn’t AJ.  And Lucky don’t drive.  Anyhooo, this person was standing on the port side stern stairs and bent over to pull on the dinghy and saw (her) keys jump up out of her sweat shirt pocket, bounce off the middle step, double flip with a half twist and stuck the landing on the bottom step, and then in a surprise move, moved immediately into a front hand spring and back somersault into the water.  NAILED IT!  She who dropped the key slurred out the MOAPs (Mother of All Profanities) and just about threw herself in the water in an effort to stop the keys from hitting the water.
So we are in seven feet of water.  It is spring.  The outside temperature is in the low sixties.  The water temperature is not warm and the Chesapeake bay is murky on a good day.  We don’t have goggles.  For some reason, Jan decides that she is going to jump in and try to find the keys that someone dropped.  She changes to her swimsuit and plunges in the water and jumps straight back out.  It was, she reported, impossible to get all the way down to the bottom and, furthermore, it was COLD!  I gave it the college try, made it to the bottom and put my hand down into 2 feet of soft sludge at the bottom.  It was not looking good, so I called it a day.  We have more keys.
Ironically, Jan has a basket already in place on the boat for our keys, wallet and cell phone.  We did go to West Marine (and we really need to buy stock in that store) and purchase floats for our keys.  Just in case.
Update:  We got a powerful magnet from our neighbors and attached it to a pole and spent some time dragging the bottom trying to find the keys.  As expected, we got nada…

Turn off the water when you are done using it.

This would seem to be self evident.  If you are brushing your teeth in the morning, make sure you turn off the water when you are done.  Or doing the dishes.  Or cleaning the bathroom.  We have a seventy gallon tank of water on the boat and over the past three days we have had to fill it three times.  We are not taking showers on the boat (we are at a dock) nor are we drinking an excessive amount or even using that much for dishes.  Nope.  What has happened is a series of morning when someone (male, 12 years old) leaves the water on and then we depart the boat.  To come back to an empty tank.  The first time we thought we had sprung a leak and pulled up all our boards and looked in all our lockers for the seventy gallons of water.  Nothing.  Second time, he who did the deed fessed up to the action.  Third time was she who must be obeyed after cleaning the bathroom.  No more!