Are you sure you are done with that trainer? 
At the fields I've trained at, most of the flyers became complacent with aileron and elevator and have been flying for years without learning the rudder. This is mostly why they are scared of a little wind when landing. The rudder can be used for many corrections especially when cross wind landing  to have good control.

        When the plane is on approach and it crabs to one side ailerons are not always enough. Try this, lets say on approach, the plane moves to "your left", move the rudder left enough to correct and hold it there. The plane may nose down and go to "your right", continue holding in left rudder and make corrections with the right stick. you will find the plane becomes more stable and can be flown strait in. Try it up high with low throttle, after a while you'll be doing touch and go's in the wind while everyone else wonders how you do it.</p>