I can start you off:
1. The masses do not matter. How heavy a ball is does not change how fast it drops towards the ground.
2. A change of coordinates will make your life a lot easier. Instead of working with the glider at an incline, pretend that you tilt your head so that the glider is horizontal from your point of view.
3. The acceleration for a free-fall drop close to Earth is (approximately ). However, because the glider is inclined only by 30 degrees instead of the full 90, use sine of 30 as scaling factor in your accelerations.
4. Set up two kinematic equations dictating each glider and calculate for the point where the two equations are equal (i.e. - the gliders meet)