I think Luke must have some hidden qualities. Just think about it, he flies to Dagobar and crash lands. Now he could have landed anywhere but just happens to land in the right place to met the guy he's trying find. what are the chances of that !!!!!
That was apparently the force 'taking over his ship' and crash landing him close enough for Yoda to find him... and later a test could he even leave by raising the ship...
