Breaking up timing problems, like a haul is best done by casting sideways, very slowly. Let the line hit the ground at every stage, you are just going to be looking at the line and watching what your movements do to it. Once you see how it works move it up to a normal casting position.
To start, the forward haul is the most useful. The acceleration of the haul should not start until the rod is past your head coming forward. Start the haul when you see the rod...
Pull in a little bit of line and immediately return it or release, depending on the length of your stroke. Big exaggerated hauls add little that a short quick haul does not.
The back haul is also done late in the acceleration of the rod to maximize effect.
