In real life, most goals are scored below knee level, and on the goaltender's stick side. When the goaltender is sprawled across the ice (typically when you attempt a onetimer or a deke), the upper corners are left open.

When playing NHL 10, try moving the RS as close to 12 o'clock as possible when you shoot. The quality of your shot will be much better if you end up with the RS at 12 then if you end up at 11.