sentences:  In moderate conditions the sailing performance is unremarkable.In heavy conditions upwind the Olson 30 suffers from the lack of weight to drive the bow and the boat through waves, however downwind in a breeze the Olson 30 surfs and planes readily, and it was for these conditions the boat was ultimately designed.The stock rudder tends to be underpowered in heavy air, leading to difficult driving downwind especially in short waves and big wind.