So in other words, bob said:
- use a haul to increase load in the rod during the backcast, resulting in more power and linespeed
- use proper timing (wait for the backcast to pull on the rod) before starting the forward cast
Both of these will certainly increase load in the rod and thus line speed.
However I would clarify that tight loops have less to do with hauling and timing than they do with other factors, to be specific the path of acceleration and the stopping-point relative to that path.
For instance, I can throw tiny loops with no hauling in either direction and virtually no effort, and very low line speed provided the momentum of the line (end to end) is traveling in a straight vector, and the rod tip stops very close to and just under that vector, voila - tight loop.
But I do not want to downplay your advice, it's very good advice indeed. Hauling and proper timing are both key to sufficient power in your casting stroke.
Per the 'tug' on the backcast - you might find it interesting to experiment with the amount of loop left in the line before you start forward. In some cases leaving a little bit of curl in the backcast before you begin the forward cast works in your favor, provided the acceleration is gradual to begin with (no shock) and there is adequate tension in the rod when it comes forward (absolutely no creep).
If you are getting turbulence in the cast especially as the leader unfolds out in front of you it could be caused by startup shock from a backcast that was allowed to recoil behind you, otherwise too sudden of an application of power, or a side-swipe in the stroke might do it as well.