Small open boats, like the ones used for sailing or casual outings, can be a lot of fun, but they can flip over if you get a sudden strong gust of wind.  Flipping or capsizing can usually be avoided by promptly easing or releasing the main sheet as soon as you feel the gust of wind and notice the boat heeling more than normal.  The main sheet is the name for the rope or line that you use to adjust the angle of the main sail to the wind.  What should you do if your small open